known ransomware use

Mozilla Firefox Use-After-Free Vulnerability

Added to KEV
2024-10-15
Federal due date
2024-11-05
Vendor
Mozilla
Product
Firefox
EPSS
96.8th percentile (score 0.308, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Known
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2024-9680

CISA short 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.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.