CVE-2026-11645: Google Chromium V8 Out-of-Bounds Read and Write Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

Google Chromium V8 out-of-bounds read and write vulnerability that could allow a remote attacker to execute arbitrary code inside a sandbox 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/2026/06/stable-channel-update-for-desktop_0153744567.html ; https://issues.chromium.org/issues/506689381 ; https://nvd.nist.gov/vuln/detail/CVE-2026-11645

Weakness behind it

CISA records this vulnerability as an instance of CWE-125, CWE-787. 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-2026-11645
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog