CVE-2025-6554: Google Chromium V8 Type Confusion Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

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.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://chromereleases.googleblog.com/2025/06/stable-channel-update-for-desktop_30.html?m=1 ; https://nvd.nist.gov/vuln/detail/CVE-2025-6554

Weakness behind it

CISA records this vulnerability as an instance of CWE-843. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6554
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog