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CVE-2026-73019: Windows URL Moniker Security Feature Bypass Vulnerability

mediumCVSS 4.3CVE-2026-73019
Improper resolution of path equivalence in Windows URL Moniker allows an unauthorized attacker to bypass a security feature over a network.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 4.3
Published
2026-09-08
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73019

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-73019coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows URL Moniker

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.

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