Microsoft Windows Admin Center up to 2.6.3 improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.6$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Microsoft Windows Admin Center up to 2.6.3. Impacted is an unknown function. The manipulation results in improper authentication. This vulnerability was named CVE-2026-26119. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Windows Admin Center up to 2.6.3. Affected is an unknown code block. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

The advisory is shared for download at msrc.microsoft.com. This vulnerability is traded as CVE-2026-26119 since 02/11/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 302151 (Microsoft Windows Admin Center Local Privilege Escalation (February 2026)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.6.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (302151) and CERT Bund (WID-SEC-2026-0470). Once again VulDB remains the best source for vulnerability data.

Affected

  • Microsoft Windows Admin Center

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 302151
Nessus Name: Microsoft Windows Admin Center Local Privilege Escalation (February 2026)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Windows Admin Center 2.6.4

Timelineinfo

02/11/2026 CVE reserved
02/18/2026 +7 days Advisory disclosed
02/18/2026 +0 days VulDB entry created
03/17/2026 +27 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-26119 (🔒)
GCVE (CVE): GCVE-0-2026-26119
GCVE (VulDB): GCVE-100-346428
CERT Bund: WID-SEC-2026-0470 - Microsoft Windows Admin Center: Schwachstelle ermöglicht Privilegieneskalation

Entryinfo

Created: 02/18/2026 06:55
Updated: 03/17/2026 01:23
Changes: 02/18/2026 06:55 (64), 02/20/2026 14:51 (7), 03/17/2026 01:23 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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