CVE-2026-50444
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk45th percentile - higher than 45% of all known CVEs
Summary
Missing authentication for a critical function in Windows Server Update Service (WSUS) allows an authorized attacker to elevate privileges over a network.
Risk Assessment
An attacker with network access can exploit this vulnerability to escalate privileges, potentially leading to server compromise and lateral movement within the infrastructure.
Recommendation
Apply the security update provided by Microsoft for Windows Server Update Service immediately and review authentication settings for critical functions.
Other vulnerabilities in Windows Server Update Service
See all- CVE-2026-83499High
Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-81969High
Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-105009High
Incorrect default permissions in Windows Server Update Service allows an authorized attacker to elevate privileges locally.
- CVE-2025-59287CriticalActively exploited
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
- CVE-2026-50328High
An unhandled exception in Windows Server Update Service (WSUS) allows an unauthorized attacker to perform tampering over a network. This vulnerability could compromise the integrity of updates.
- CVE-2026-20856High
Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
Original NVD description (English source)
Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS