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CVE-2026-19151: CVE-2026-19151 Use after free in V8

unknownCVE-2026-19151
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

vendor: Microsoftproduct: Microsoft EdgeMemory corruption
What
Use-after-free vulnerability in Chromium V8 JavaScript engine inherited by Microsoft Edge.
Who is affected
Microsoft Edge users on all platforms running affected Chromium versions.
Urgency
Moderate urgency; V8 memory-corruption can enable arbitrary code execution; no active exploitation but severity unknown.
Action
Update Microsoft Edge to the latest version that includes the Chromium patch.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
unknown
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19151

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-19151coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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