CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-50457: Windows Runtime Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-50457
Use after free in Windows Runtime allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows RuntimePrivilege escalation
What
A use after free vulnerability in Windows Runtime allows an authorized attacker to elevate privileges locally.
Who is affected
Authorized users of Windows Runtime.
Urgency
Remediation is high urgency due to the potential for privilege escalation, with a high severity rating.
Action
Apply patches when available.

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

⚡ Watch Windows Runtime

Get an email when a new Windows Runtime advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50457

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-2026-50457coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows Runtime 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