critical Known exploitedREV. 01

CVE-2024-9680Mozilla Firefox — use-after-free in animation timelines

Firefox and its extended support releases use memory after releasing it in animation timelines, so a crafted page runs the attacker's code inside the content process. Exploited in the wild.

YOUR NEXT MOVE

Update Firefox past 131.0.2 and the matching extended support release now; ransomware crews use this, so restart browsers rather than deferring.

Read the risk

THE VITAL STATS
CVSS score
9.8/ 10
CVSS v3.1
EPSS probability
23%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2024-10-09
Added to KEV
2024-10-15
Exploit published
Not recorded
Confidence
high
Kill chain
execution
MITRE ATT&CK
T1203
Severity
critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attacker needsThe user must open an attacker-controlled web page in an affected Firefox build.

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2024-9680 · CRDS 0.1 · Issued 2026-09-24