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CVE-2026-54989: Quality Windows Audio/Video Experience (QWAVE) Elevation of Privilege Vulnerability

highCVSS 7CVE-2026-54989
Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Quality Windows Audio/Video Experience (QWAVE)Privilege escalation
What
Use after free in Quality Windows Audio/Video Experience (QWAVE) service allows an authorized attacker to elevate privileges locally.
Who is affected
Authorized users of QWAVE service.
Urgency
Remediation is urgent due to the high severity and potential for local privilege escalation.
Action
Update QWAVE to the latest version.

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
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54989

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-2026-54989coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Quality Windows Audio/Video

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