Is CVE-2024-9400 in the CISA KEV catalog?

No. CVE-2024-9400 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-9400?

CVE-2024-9400 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2024-9400?

CVE-2024-9400 has an EPSS score of 0.48% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-9400?

Upgrade firefox on debian unstable to 131.0-1 or later. Fixes are available for 20 affected products.

CVE & CISA-KEV Catalog

CVE-2024-9400

HIGH

8.8

CVSS v3

NVD

Description

A potential memory corruption vulnerability could be triggered if an attacker had the ability to trigger an OOM at a specific moment during JIT compilation. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:131.0-1CVE-2024-9400

firefoxRed Hat / RHEL

Fixed in:0:128.3.0-1.el7_9RHSA-2024:7702

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

firefoxRocky

Fixed in:0:128.3.0-1.el7_9RHSA-2024:7702

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

firefox-debuginfoRed Hat / RHEL

Fixed in:0:128.3.0-1.el7_9RHSA-2024:7702

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

firefox-debuginfoRocky

Fixed in:0:128.3.0-1.el7_9RHSA-2024:7702

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

firefox-debugsourceRed Hat / RHEL

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

firefox-debugsourceRocky

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7703

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7646

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el8_8RHSA-2024:7842

Fixed in:0:128.3.0-1.el8_6RHSA-2024:7704

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7621

firefox-x11Rocky

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

firefox-x11Red Hat / RHEL

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7622

thunderbirdRocky

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

thunderbirdRed Hat / RHEL

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

thunderbird-debuginfoRed Hat / RHEL

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

thunderbird-debuginfoRocky

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

thunderbird-debugsourceRed Hat / RHEL

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

thunderbird-debugsourceRocky

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_10RHSA-2024:7699

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.0-1.el8_2RHSA-2024:7856

Fixed in:0:128.3.0-1.el8_4RHSA-2024:7854

Fixed in:0:128.3.0-1.el8_6RHSA-2024:8169

Fixed in:0:128.3.1-1.el8_8RHSA-2024:8166

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7552

Fixed in:0:128.3.0-1.el9_2RHSA-2024:7853

Fixed in:0:128.3.0-1.el9_0RHSA-2024:7855

firefoxUbuntu

Fixed in:131.0+build1.1-0ubuntu0.20.04.1USN-7056-1

thunderbirdUbuntu

Fixed in:1:140.7.1+build1-0ubuntu0.22.04.1USN-7991-1

DeveloperEditionWindows application

Affected:131.0Fixed in:131.0Mozilla

Affected:128.3.0Fixed in:128.3.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:128.3.0Fixed in:128.3.0Mozilla

Affected:131.0Fixed in:131.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:129.0 131.0Fixed in:131.0Mozilla

Affected:128.3.0Fixed in:128.3.0Mozilla

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

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.48%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Vendor Advisory4

Issue Tracking1

bugzilla.mozilla.org

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

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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 2025-04-04.