ClosedPatched

Mozilla Firefox Use-After-Free

Mozilla Firefox

Mozilla Firefox and Firefox ESR contain a use-after-free vulnerability in Animation timelines that allows for code execution in the content process. Added to the CISA KEV catalog on 2024-10-15. CISA lists known use in ransomware campaigns.

Why this severity: CVSS 9.8 (v3.1, CISA-ADP), actively exploited (CISA KEV); known ransomware use

Started: Oct 9, 2024
Closed: Oct 15, 2024
CVE: CVE-2024-9680

Follow this incident

Updated Oct 15, 2024

Affected

See vendor advisory (versions are not listed in the KEV record)

Fixed in

See vendor advisory linked in sources

Timeline2

Oct 15, 2024
CISA added CVE-2024-9680 to the KEV catalog (federal deadline 2024-11-05)
Source
Oct 9, 2024
CVE-2024-9680 published
Source

Advisories3

Notes & caveats

Derived from the CISA KEV JSON feed (catalogVersion 2026.10.21); CVSS from the CVE record (cveawg.mitre.org). startedAt is the CVE publication date when it fell in 2024 before the KEV listing, else the KEV dateAdded; exploitation may have begun earlier. closedAt is the KEV listing date (a fix or mitigation was available then unless noted).

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