CVE-2025-6554

criticalknown exploitedpublic exploitcovered by 1 sourcefirst seen 2025-07-02

Actively exploited. CVE-2025-6554 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-07-02) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-6554 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.

Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

CSIRTS triage

What: Google Chromium V8 contains a type confusion vulnerability that could allow a remote attacker to perform arbitrary read/write via a crafted HTML page.
Who is affected: Users of web browsers utilizing Chromium, including Google Chrome and Microsoft Edge, are affected.
Urgency: This vulnerability is critical and has been exploited, necessitating prompt action.
Action: Update to the latest version of Chromium or affected browsers to mitigate this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 93% of all EPSS-scored CVEs.

Exploit availability

Public exploit or proof-of-concept code for CVE-2025-6554 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.

GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗

Advisory coverage (1)

criticalexploitedCVE-2025-6554: Google Chromium V8 Type Confusion Vulnerabilitycisa-kev · 2025-07-02

External references

NVD record for CVE-2025-6554

CVE.org record

CISA KEV catalog

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