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CVE-2026-55000: Windows USB Print Driver Elevation of Privilege Vulnerability

mediumCVSS 6.4CVE-2026-55000
Use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.

CSIRTS triage

vendor: Microsoftproduct: Windows USB Print DriverPrivilege escalation
What
A use after free in Windows USB Print Driver allows an unauthorized attacker to elevate privileges with a physical attack.
Who is affected
Users of Windows USB Print Driver are affected.
Urgency
Remediation is medium due to the potential for physical attacks but not remotely exploitable.
Action
Review and enhance physical security measures for devices using Windows USB Print Driver.

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 6.4
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55000

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-2026-55000coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows USB Print

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