EUVD-2026-73754
GHSA-hc69-rg7r-563r
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Network-delivered URL bypass requiring active user click; no attacker privileges needed; impact limited to low confidentiality with no write or availability consequence.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Improper resolution of path equivalence in Windows URL Moniker allows an unauthorized attacker to bypass a security feature over a network.
AnalysisAI
Security feature bypass in Windows URL Moniker enables a remote, unauthenticated attacker to circumvent URL-based security controls across virtually all supported Windows versions from Server 2012 through Windows 11 26H1. Rooted in improper resolution of path equivalence (CWE-41), the flaw allows crafted URL representations to evade security filters that would otherwise block access to restricted resources. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires user interaction: the victim must click or activate a crafted URL delivered via phishing, malicious document, or web content (UI:R per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.3 base score (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) reflects a moderate, user-assisted security feature bypass with limited confidentiality impact and no write or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft Patch Tuesday update addressing CVE-2026-73019, available from the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73019. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-41 – Improper Resolution of Path Equivalence
View allSame technique Authentication Bypass
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External POC / Exploit Code
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