CVE-2026-69718

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Command Injection in Windows Update

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Improper neutralization of special elements used in a command ('command injection') in Windows Update allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-69718

EUVD

EUVD-2026-99289

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
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.

Attack-Flow Graph

Executive Summary

This is a command injection vulnerability in Windows Update where improper neutralization of special elements allows an authorized attacker to execute arbitrary commands with elevated privileges locally.

Impact Analysis

An attacker with local access could exploit this to gain higher system privileges, potentially allowing them to install malicious software, access sensitive data, or take control of the affected system.

Compliance Impact

This vulnerability allows local privilege escalation through command injection in Windows Update. While not directly tied to data exposure, unauthorized privilege escalation could lead to unauthorized access to sensitive systems, potentially violating compliance requirements for data protection and access controls in standards like GDPR and HIPAA.

Mitigation Strategies

Apply the latest Windows updates from Microsoft Update to patch the command injection vulnerability in Windows Update. Monitor Microsoft's security advisories for patches and install them promptly.

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