CVE & CISA-KEV Catalog

CVE-2026-12296

CRITICAL
9.6
CVSS v3
NVD

Description

Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

CWE-693Protection Mechanism FailureCWE-403

How to fix

Remediation Available
firefoxDebian
Fixed in:152.0-1CVE-2026-12296
firefoxRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9.ppc64RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
firefoxRocky
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9.ppc64RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
firefox-debuginfoRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9.ppc64RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
firefox-debuginfoRocky
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9.ppc64RHSA-2026:38506
Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
firefox-debugsourceRocky
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
firefox-debugsourceRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el10_0RHSA-2026:36100
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103
Fixed in:0:140.12.0-1.el8_4RHSA-2026:36102
Fixed in:0:140.12.0-1.el8_6RHSA-2026:37210
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el8_10RHSA-2026:27717
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
firefox-x11Rocky
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
firefox-x11Red Hat / RHEL
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
Fixed in:0:140.12.0-1.el9_4RHSA-2026:39011
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_2RHSA-2026:36101
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734
Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391
thunderbirdRocky
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
thunderbirdRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
thunderbird-debuginfoRocky
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
thunderbird-debuginfoRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
thunderbird-debugsourceRed Hat / RHEL
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
thunderbird-debugsourceRocky
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_0RHSA-2026:38751
Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846
Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445
Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706
Fixed in:0:140.12.0-1.el9_8RHSA-2026:29940
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750
Fixed in:0:140.12.0-1.el9_4RHSA-2026:38753
DeveloperEditionWindows application
Affected:152.0.0Fixed in:152.0.0Mozilla
Affected:140.12.0Fixed in:140.12.0Mozilla
Mozilla Firefox (en-US)Windows application
Affected:140.12.0Fixed in:140.12.0Mozilla
Affected:152.0.0Fixed in:152.0.0Mozilla
Mozilla Thunderbird (en-US)Windows application
Affected:152.0.0Fixed in:152.0.0Mozilla
Affected:140.12.0Fixed in:140.12.0Mozilla

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploit Intelligence

0.39%probability of exploitation in 30 days
32ndpercentile

Low risk: more likely to be exploited than 32% of all known CVEs.

References

Related Vulnerabilities

Other CWE-693 (Protection Mechanism Failure) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2013-2465Critical9.899%KEV + Ransom-
CVE-2024-21412High8.195%KEV + RansomFix
CVE-2013-0431Medium5.390%KEV + Ransom-
CVE-2019-1003030Critical9.976%KEV-
CVE-2025-40536High8.172%KEVFix
CVE-2025-0411High7.067%KEVFix

Common questions

How do I fix CVE-2026-12296?

Published advisories record a fix for 18 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-12296 being actively exploited?

Not that we know of. CVE-2026-12296 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.39% is the estimated probability that it will be exploited in the next 30 days. That is higher than 32% of all scored CVEs.

How severe is CVE-2026-12296?

CVE-2026-12296 has a CVSS v3 base score of 9.6, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-12296 affect?

Published advisories record a fix for firefox (Debian), firefox (Red Hat / RHEL), firefox (Rocky), firefox-debuginfo (Red Hat / RHEL), and 14 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-12296
CVE-2026-12296 severity badge

Markdown

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HTML

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Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

See how it worksStart freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.