Is CVE-2026-12311 in the CISA KEV catalog?

No. CVE-2026-12311 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-12311?

CVE-2026-12311 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2026-12311?

CVE-2026-12311 has an EPSS score of 0.18% (8th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-12311?

Upgrade firefox on debian unstable to 152.0-1 or later. Fixes are available for 18 affected products.

CVE & CISA-KEV Catalog

CVE-2026-12311

MEDIUM

4.7

CVSS v3

NVD

Description

Information disclosure, 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-200Information Exposure CWE-688

How to fix

Remediation Available

firefoxDebian

Fixed in:152.0-1CVE-2026-12311

firefoxRed Hat / RHEL

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.el7_9.ppc64RHSA-2026:38506

Fixed in:0:140.12.0-1.el7_9RHSA-2026:38506

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_6RHSA-2026:37210

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_4RHSA-2026:36102

Fixed in:0:140.12.0-1.el8_8RHSA-2026:36103

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_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_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_4RHSA-2026:39011

Fixed in:0:140.12.0-1.el9_8RHSA-2026:27734

firefoxRocky

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_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.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_10RHSA-2026:27717

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.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_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_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_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

firefox-debuginfoRocky

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_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.el7_9RHSA-2026:38506

Fixed in:0:140.12.0-1.el7_9.ppc64RHSA-2026:38506

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_8RHSA-2026:36103

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.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_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_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_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-debuginfoRed 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_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.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_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_8RHSA-2026:36103

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.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_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_6RHSA-2026:37391

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_0RHSA-2026:36100

Fixed in:0:140.12.0-1.el10_2RHSA-2026:27733

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_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.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_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_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_6RHSA-2026:37391

firefox-debugsourceRed 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_2RHSA-2026:27733

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_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.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_8RHSA-2026:27734

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_6RHSA-2026:37391

firefox-x11Rocky

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_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_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

firefox-x11Red Hat / RHEL

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_2RHSA-2026:36101

Fixed in:0:140.12.0-1.el9_6RHSA-2026:37391

thunderbirdRocky

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.el8_10RHSA-2026:33445

Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428

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_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_10RHSA-2026:33445

Fixed in:0:140.12.0-1.el8_8RHSA-2026:39142

Fixed in:0:140.12.0-1.el8_6RHSA-2026:39141

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_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_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_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

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.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_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_4RHSA-2026:39428

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_6RHSA-2026:39141

Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445

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_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_2RHSA-2026:39706

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_2RHSA-2026:39706

thunderbird-debuginfoRed 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_2RHSA-2026:30846

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.el8_6RHSA-2026:39141

Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445

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_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_6RHSA-2026:38750

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_2RHSA-2026:39706

Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750

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_0RHSA-2026:38751

Fixed in:0:140.12.0-1.el10_2RHSA-2026:30846

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_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.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_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_8RHSA-2026:29940

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

Fixed in:0:140.12.0-1.el9_2RHSA-2026:39706

thunderbird-debugsourceRed Hat / RHEL

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.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_8RHSA-2026:39142

Fixed in:0:140.12.0-1.el8_4RHSA-2026:39428

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_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_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_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

thunderbird-debugsourceRocky

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_8RHSA-2026:39142

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_4RHSA-2026:39428

Fixed in:0:140.12.0-1.el8_10RHSA-2026:33445

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_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_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_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_8RHSA-2026:29940

Fixed in:0:140.12.0-1.el9_6RHSA-2026:38750

DeveloperEditionWindows application

Affected:152.0Fixed in:152.0Mozilla

Affected:140.0 140.12.0Fixed in:140.12.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:152.0Fixed in:152.0Mozilla

Affected:140.0 140.12.0Fixed in:140.12.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:140.0 140.12.0Fixed in:140.12.0Mozilla

Affected:152.0.0Fixed in:152.0.0Mozilla

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

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

0.18%probability of exploitation in 30 days

8thpercentile

Low risk: more likely to be exploited than 8% of all known CVEs.

References

Vendor Advisory4

Other references1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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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 2026-06-16.