CVE-2026-26154
HIGH EPSS 60.4%
Published Apr 14, 20262mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
Description
Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
60.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-20 Improper Input Validation Validation
Affected Products 7
| Vendor | Product | Version | Range |
|---|---|---|---|
| microsoft | windows_server_2012 | * | any |
| microsoft | windows_server_2012 | r2 | any |
| microsoft | windows_server_2016 | * | <10.0.14393.9060 |
| microsoft | windows_server_2019 | * | <10.0.17763.8644 |
| microsoft | windows_server_2022 | * | <10.0.20348.5020 |
| microsoft | windows_server_2022_23h2 | * | <10.0.25398.2274 |
| microsoft | windows_server_2025 | * | <10.0.26100.32690 |
References 1
- msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26154
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.