CVE-2024-9680: Mozilla Firefox Use-After-Free Vulnerability

CISA Known Exploited Vulnerabilities

Name

Mozilla Firefox Use-After-Free Vulnerability

Vendor

Mozilla

Product

Firefox

Added to the catalog

2024-10-15

Due date for US federal agencies

2024-11-05

Weaknesses

CWE-416

Catalog version

2026.10.30

Mozilla Firefox and Firefox ESR contain a use-after-free vulnerability in Animation timelines that allows for code execution in the content process.

Required action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Ransomware use: CISA marks this vulnerability as known to be used in ransomware campaigns. CISA does not say which group used it.

Links in CISA's notes

• https://www.mozilla.org/en-US/security/advisories/mfsa2024-51/
• https://nvd.nist.gov/vuln/detail/CVE-2024-9680

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2024-10-09T13:15:12.090

Last modified

2026-08-04T05:16:32.530

Weaknesses

CWE-416

An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1923344 (Issue Tracking, Permissions Required)
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2024-49039 (Not Applicable, Patch, Vendor Advisory)
• https://www.mozilla.org/security/advisories/mfsa2024-51/ (Vendor Advisory)
• https://www.mozilla.org/security/advisories/mfsa2024-52/ (Vendor Advisory)
• https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281992 (Issue Tracking)
• https://lists.debian.org/debian-lts-announce/2024/10/msg00005.html (Mailing List)
• https://lists.debian.org/debian-lts-announce/2024/10/msg00006.html (Mailing List)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-9680 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:15.686Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-9680

CVE record

Assigner

mozilla

State

PUBLISHED

Published

2024-10-09T12:59:07.108Z

Updated

2026-08-04T03:55:28.598Z

Problem types

Use-after-free in Animation timeline

An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines. We have had reports of this vulnerability being exploited in the wild. This vulnerability affects Firefox < 131.0.2, Firefox ESR < 128.3.1, Firefox ESR < 115.16.1, Thunderbird < 131.0.1, Thunderbird < 128.3.1, and Thunderbird < 115.16.0.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1923344
• Windows sandbox escape detected with the in-the-wild exploit
• https://www.mozilla.org/security/advisories/mfsa2024-51/
• https://www.mozilla.org/security/advisories/mfsa2024-52/

Read on 2026-11-03T02:14:34.402Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2024/9xxx/CVE-2024-9680.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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