CVE-2026-50476: Use after free in Microsoft Windows allows an authorized attacker to elevate privileges locally.

Details

Source

NVD Recent CVEs (US · database · site)

Severity

high — CVSS 7.8

Published

2026-07-14

Last updated

2026-07-21

Exploitation

Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-50476

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.

• Moderate exploitation riskCVE-2026-504761.6% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 74% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• critical[NEW] [critical] Microsoft Windows products: Multiple vulnerabilitiescert-bund
• unknownexploitedNCSC-2026-0231 [1.00] [M/H] Vulnerabilities fixed in Microsoft Windowsncsc-nl
• highCVE-2026-50476: Windows Network Connections Service Elevation of Privilege Vulnerabilitymsrc

Recent advisories for Use after free

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.

• highCVE-2026-67300: FreeRDP before 3.29.0 contains client-side heap use-after-free vulnerabilities in the async up…nvd · 2026-08-01
• highCVE-2026-67299: FreeRDP before 3.29.0 contains a client-side heap use-after-free in the async update message p…nvd · 2026-08-01
• highCVE-2026-65981: Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server…nvd · 2026-07-31
• highCVE-2026-63035: A heap use-after-free vulnerability in the TransferSubscriptions service in open62541 may allo…nvd · 2026-07-30
• unknownCVE-2026-13117: An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote…nvd · 2026-07-30
• unknownCVE-2026-12996: A use-after-free in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote au…nvd · 2026-07-30

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