CVE-2024-9680
Mozilla Firefox Use-After-Free Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA notes
https://www.mozilla.org/en-US/security/advisories/mfsa2024-51/ ; https://nvd.nist.gov/vuln/detail/CVE-2024-9680
Description
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation Context
as of October 14, 2026- CISA added CVE-2024-9680 to the KEV catalog 6 days after its CVE record was published. The median for entries added in 2024 is 21.5 days.
- It is one of 13 Mozilla entries in the CISA KEV catalog, and the only one added in 2024.
- Its current EPSS score (23.2%) is higher than that of 37% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Mozilla Firefox | unspecified to <131.0.2 |
| Mozilla | Mozilla Firefox ESR | unspecified to <128.3.1 |
| Mozilla | Mozilla Firefox ESR | unspecified to <115.16.1 |
| Mozilla | Mozilla Thunderbird | unspecified to <131.0.1 |
| Mozilla | Mozilla Thunderbird | unspecified to <128.3.1 |
| Mozilla | Mozilla Thunderbird | unspecified to <115.16.0 |
References
7 Links- 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/
- https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=281992
- https://lists.debian.org/debian-lts-announce/2024/10/msg00005.html
- https://lists.debian.org/debian-lts-announce/2024/10/msg00006.html
Record Details
More from Mozilla
Mozilla Firefox Security Feature Bypass Vulnerability
Mozilla Firefox Use-After-Free Vulnerability
Mozilla Firefox Information Disclosure Vulnerability
Mozilla Firefox Use-After-Free Vulnerability
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.