Exploited vulnerability · CISA KEV

Is CVE-2024-9680 exploited? Yes: in CISA KEV since 15 Oct 2024

Gociux · Mozilla Firefox · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-9680, Mozilla Firefox Use-After-Free Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 15 Oct 2024, 6 days after it was published. It is known to be used in ransomware campaigns. It affects Mozilla Firefox. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What it is

Mozilla Firefox and Firefox ESR contain a use-after-free vulnerability in Animation timelines that allows for code execution in the content process.

What to do

1. Check whether you run it. Look for Firefox in your asset inventory, including appliances and cloud images. Stack check lists every exploited Mozilla CVE at once.
2. Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 9 Oct 2024.
4. Get told next time. Email alerts when CISA adds a CVE for Mozilla.

Other exploited CVEs in Firefox

• CVE-2015-4495: Mozilla Firefox Security Feature Bypass Vulnerability (25 May 2022)
• CVE-2022-26486: Mozilla Firefox Use-After-Free Vulnerability (7 Mar 2022)
• CVE-2022-26485: Mozilla Firefox Use-After-Free Vulnerability (7 Mar 2022)
• CVE-2013-1675: Mozilla Firefox Information Disclosure Vulnerability (3 Mar 2022)

References

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

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2024 · Mozilla scorecard · act-now radar.