Critical9.6Vendor: HighRed Hat & Ubuntu Linux Exploited CISA KEV
Out of bounds memory access in V8
CVE-2026-11645 Published Jun 8, 2026
CVE-2026-11645
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Out of bounds memory access in V8. Red Hat rates this important (CVSS 9.6). Weakness: CWE-125. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
CISA Known Exploited Vulnerability
- Listed:
- Jun 9, 2026 · federal remediation due Jun 23, 2026
- Required action:
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Ransomware use:
- Unknown
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 6 hours ago·verify at source
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