Windows Admin Center fixes 1 vulnerability

Do you think this report is well-written? *

Yes

Do you use this technology? *

Yes

Was this report useful to you?

Yes

We would be happy if you would describe:

The security services provided by CESNET are designed to provide significant support in ensuring the cybersecurity of connected organizations. Although we strive to provide quality and reliable services, it is not possible to guarantee absolute coverage of all security vulnerabilities. Our services should be seen as a complement to an organization's own security management, not as a replacement. The client bears ultimate responsibility for securing their environment.

This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.

[TLP:CLEAR] Windows Admin Center fixes 1 vulnerability

Microsoft warns of a high-severity vulnerability in Windows Admin Center [1]. The fixed version 2511 was released as early as December 2025 [2]. No details about the vulnerability are available yet, probably in line with responsible disclosure principles.

Microsoft Windows Admin Center - privilege escalation (CVE-2026-26119)

CVSS 8.8 (High)

Allows an authenticated remote attacker to elevate their privileges [1].

The vulnerability is present in product:

Windows Admin Center; <2511;

CVSS: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

More information:

CVE-2026-26119 at cve.org, NVD
CWE-287: Improper Authentication at cwe.mitre.org

The vulnerability was publicly disclosed 17. 2. 2026.

Links

By CESNET, z.s.p.o. Michaela Ručková on 24. 2. 2026.

Report feedback

[TLP:CLEAR] Windows Admin Center fixes 1 vulnerability

Microsoft Windows Admin Center - privilege escalation (CVE-2026-26119)

CVSS 8.8 (High)

Links