Is CVE-2024-9401 in the CISA KEV catalog?

No. CVE-2024-9401 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-9401?

CVE-2024-9401 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2024-9401?

CVE-2024-9401 has an EPSS score of 0.74% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-9401?

Upgrade firefox on debian unstable to 131.0-1 or later. Fixes are available for 19 affected products.

CVE & CISA-KEV Catalog

CVE-2024-9401

CRITICAL

9.8

CVSS v3

NVD

Description

Memory safety bugs present in Firefox 130, Firefox ESR 115.15, Firefox ESR 128.2, and Thunderbird 128.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.

CWE-119Buffer Overflow

How to fix

Remediation Available

firefoxDebian

Fixed in:131.0-1CVE-2024-9401

firefoxRed Hat / RHEL

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

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_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_6RHSA-2024:7704

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_2RHSA-2024:7646

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

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

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_4RHSA-2024:7505

firefoxRocky

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_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.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_10RHSA-2024:7700

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.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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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_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_2RHSA-2024:7646

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_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_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

firefox-debuginfoRocky

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_8RHSA-2024:7842

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.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_10RHSA-2024:7700

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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_4RHSA-2024:7505

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_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.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_8RHSA-2024:7842

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

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_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_4RHSA-2024:7505

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

firefox-debugsourceRed Hat / RHEL

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_2RHSA-2024:7646

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

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_8RHSA-2024:7842

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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

firefox-x11Rocky

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

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

Fixed in:0:128.3.0-1.el9_4RHSA-2024:7505

thunderbirdRocky

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_4RHSA-2024:7854

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

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

Fixed in:0:128.3.0-1.el8_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:0:128.3.0-1.el8_2RHSA-2024:7856

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

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

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

thunderbirdRed Hat / RHEL

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_2RHSA-2024:7856

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

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

Fixed in:0:128.3.1-1.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_4RHSA-2024:7854

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

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

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

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_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.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

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

thunderbird-debuginfoRocky

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

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_6RHSA-2024:8169

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.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:0:128.3.0-1.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_6RHSA-2024:8169

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

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

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

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.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-debugsourceRed Hat / RHEL

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

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

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

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_4RHSA-2024:7854

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_6RHSA-2024:8169

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_4RHSA-2024:7552

thunderbird-debugsourceRocky

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.el8_6RHSA-2024:8169

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

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_4RHSA-2024:7854

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

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

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

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

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

firefoxUbuntu

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

DeveloperEditionWindows application

Affected:115.16.0Fixed in:115.16.0Mozilla

Affected:131.0Fixed in:131.0Mozilla

Affected:116.0 128.3.0Fixed in:128.3.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:115.16.0Fixed in:115.16.0Mozilla

Affected:131.0Fixed in:131.0Mozilla

Affected:116.0 128.3.0Fixed in:128.3.0Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:128.3.0Fixed in:128.3.0Mozilla

Affected:129.0 131.0Fixed in:131.0Mozilla

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.74%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Vendor Advisory5

Issue Tracking1

bugzilla.mozilla.org

Other references1

lists.debian.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 2025-11-03.