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CVE-2026-50431: Windows Quality of Service (QoS) Packet Scheduler Information Disclosure Vulnerability

mediumCVSS 5.5CVE-2026-50431

CSIRTS triage

vendor: Microsoftproduct: Windows Quality of Service (QoS) Packet SchedulerInformation disclosure
What
Information disclosure vulnerability in Windows QoS Packet Scheduler.
Who is affected
Users of Windows with QoS Packet Scheduler enabled.
Urgency
Remediation is medium urgency due to the potential for information disclosure.
Action
Update Windows 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
medium — CVSS 5.5
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50431

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-2026-50431coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows Quality of

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