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Exploited vulnerability · CISA KEV

Is CVE-2025-10585 exploited? Yes: in CISA KEV since 23 Sep 2025

Gociux · Google Chromium V8 · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2025-10585, Google Chromium V8 Type Confusion Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 23 Sep 2025. It affects Google Chromium V8. If you run it, CISA's required action is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 23 Sep 2025
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity8.8CVSS 3.1 · high
US federal due14 Oct 2025BOD 22-01 deadline

What it is

Google Chromium contains a type confusion vulnerability in the V8 JavaScript and WebAssembly engine.

VendorGoogle (77 exploited CVEs in KEV)
ProductChromium V8
VulnerabilityGoogle Chromium V8 Type Confusion Vulnerability
WeaknessCWE-843
Published24 Sep 2025
Added to KEV23 Sep 2025
Reported by (CNA)Chrome

What to do

  1. Check whether you run it. Look for Chromium V8 in your asset inventory, including appliances and cloud images. Stack check lists every exploited Google CVE at once.
  2. Apply the fix. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, 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 24 Sep 2025.
  4. Get told next time. Email alerts when CISA adds a CVE for Google.

Other exploited CVEs in Chromium V8

References

Questions

Is CVE-2025-10585 being exploited?

Yes. CISA added CVE-2025-10585 to the Known Exploited Vulnerabilities catalog on 23 Sep 2025, which means there is reliable evidence of exploitation in the wild.

Is CVE-2025-10585 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2025-10585?

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Check Google's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Chromium V8 and watch it for signs of compromise.

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 September 2025 · Google scorecard · act-now radar.

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