CVE-2026-11645
Actively exploited. CVE-2026-11645 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-09) — 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-2026-11645 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
CSIRTS triage
- What
- The vulnerability involves out-of-bounds memory access in V8, which could lead to exploitation.
- Who is affected
- Users of Microsoft Edge (Chromium-based) and other browsers utilizing Chromium.
- Urgency
- Remediation is important due to the unknown severity and active exploitation status.
- Action
- Ensure Microsoft Edge is updated to the latest version.
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 74% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-11645 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 (2)
- unknownexploitedCVE-2026-11645: Chromium: CVE-2026-11645 Out of bounds memory access in V8msrc · 2026-06-09
- criticalexploitedCVE-2026-11645: Google Chromium V8 Out-of-Bounds Read and Write Vulnerabilitycisa-kev · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-11645)