CVE-2026-50418: Windows System Secure Feature Bypass Vulnerability

mediumCVSS 5.1CVE-2026-50418

Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.

CSIRTS triage

vendor: Microsoft product: WindowsOther

What: Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.
Who is affected: Unauthorized users attempting to exploit the Windows System.
Urgency: Remediation is medium due to the moderate severity of the vulnerability.
Action: Apply the latest security patch for Windows System.

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

⚡ Watch Windows

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

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.1
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50418

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.

Low exploitation riskCVE-2026-504180.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-50418	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

mediumCVE-2026-50418: Improper access control in Windows System allows an unauthorized attacker to bypass a security…nvd
unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl

Recent advisories for Windows System Secure

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.

medium[NEW] [medium] Citrix Systems Secure Access Client for Windows: Multiple vulnerabilitiescert-bund · 2026-07-15
mediumCVE-2026-50418: Improper access control in Windows System allows an unauthorized attacker to bypass a security…nvd · 2026-07-14