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VulnerabilityPublished Updated

CVE-2024-9680: Mozilla Firefox · An attacker was able to achieve code execution in the content process by exploiting a use-after-free

Affects Mozilla FirefoxSource GCVE Database

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Authoritative record:CVE-2024-9680· Critical 9.8

Exploited in the wild · used in ransomware campaigns · KEV due 5 Nov 2024 · fixed in 131.0.2 : patch Mozilla Firefox now.

Data as of 30 Oct 2026, 02:01 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
Ransomware
Used in ransomware campaigns
Patch
Available – fixed in 131.0.2, 128.3.1, 115.16.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 9 Oct 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV 6 days after disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Mozilla Corporation

    , 7 hours before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. Added to CISA KEV (opens in a new tab)

    exploitation confirmed · ransomware use known

    , 6 days after disclosure

  4. KEV remediation due

    US federal deadline

    , 27 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade Mozilla Firefox to 131.0.2, 128.3.1 or 115.16.1.

Affected software

ProductAffectedFixed in
Mozilla FirefoxAffected
  • <131.0.2
  • <128.3.1
  • <115.16.1
Fixed in
  • 131.0.2
  • 128.3.1
  • 115.16.1

Description

CVE-2024-9680 is a critical use-after-free vulnerability in Firefox's Animation timelines that allows an attacker to achieve code execution in the content process. This flaw affects Firefox versions prior to 131.0.2 and Firefox ESR versions prior to 128.3.1 and 115.16.1. The vulnerability has been exploited in the wild, including in ransomware campaigns. Mozilla has released official patches to address this issue.

References

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