CVE WatchAug 4, 2026

CVE-2024-9680

Mozilla Firefox Use-After-Free Vulnerability

CVSS

9.8

Critical

EPSS

23.2%

p98

KEV

YES

Oct 15, 2024

Exploit Today

0-100

Published: Oct 9, 2024 · Last modified: Aug 4, 2026 · CWE-416

EPSS · 30d

23.2%EPSS · 30 days23.2%

2026-08-022026-08-31

KEV catalog record

Product

Mozilla / Firefox

Vulnerability

Mozilla Firefox Use-After-Free Vulnerability

Added to KEV

Oct 15, 2024

Remediate by

Nov 5, 2024

Known ransomware use

Yes

Summary description

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

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

Notes

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

Technical 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.

Official references

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