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CVE-2026-61930: Windows Kernel Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-61930
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows KernelPrivilege escalationMemory corruption
What
Heap-based buffer overflow in the kernel allows privilege escalation.
Who is affected
Authorized local attackers on all Windows systems.
Urgency
High severity (CVSS 7.8) kernel vulnerability; not yet exploited but represents significant risk.
Action
Apply the latest Windows security patch addressing CVE-2026-61930 immediately.

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
high — CVSS 7.8
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61930

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-2026-61930coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Kernel Elevation

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center