Microsoft Windows 11 24H2/11 25H2/11 26H1/Server 2025 YellowKey command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Microsoft Windows 11 24H2/11 25H2/11 26H1/Server 2025. This affects an unknown part. The manipulation leads to command injection. This vulnerability is documented as CVE-2026-45585. It is possible to launch the attack on the physical device. Additionally, an exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows 11 24H2/11 25H2/11 26H1/Server 2025. It has been rated as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Microsoft is aware of a security feature bypass vulnerability in Windows publicly referred to as "YellowKey". The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices. We are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available.

It is possible to read the advisory at msrc.microsoft.com. The identification of this vulnerability is CVE-2026-45585 since 05/12/2026. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202605-4268) and CERT Bund (WID-SEC-2026-1609). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Microsoft Windows 11
  • Microsoft Windows Server 2025

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.8
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.8
CNA Vector (microsoft): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: Yes
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/12/2026 CVE reserved
05/20/2026 +8 days Advisory disclosed
05/20/2026 +0 days VulDB entry created
05/23/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-45585 (🔒)
GCVE (CVE): GCVE-0-2026-45585
GCVE (VulDB): GCVE-100-364751
CERT Bund: WID-SEC-2026-1609 - Microsoft Windows 11 und Windows Server 2025: Schwachstelle ermöglicht Umgehen der Laufwerksverschlüsselung
CNNVD: CNNVD-202605-4268 - Microsoft Windows和Microsoft Windows Server 安全漏洞

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/20/2026 05:36
Updated: 05/23/2026 21:04
Changes: 05/20/2026 05:36 (62), 05/20/2026 05:37 (4), 05/20/2026 13:11 (7), 05/20/2026 16:26 (6), 05/23/2026 21:04 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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