Google Chromium V8 Out-of-Bounds Read and Write Vulnerability (CVE-2026-11645)
Severity: high · Patch status: unknown · Since 2026-06-09 · CVE-2026-11645
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. CISA added CVE-2026-11645 to its Known Exploited Vulnerabilities catalog on Jun 9, 2026, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 23, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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