CVE-2026-81964

Analyzed Analyzed - Analysis Complete

Hard-Coded Credentials in Windows Update Orchestrator Service

Publication date: 2026-10-13

Last updated on: 2026-10-28

Assigner: Microsoft Corporation

Description

Use of hard-coded credentials in Windows Update Orchestrator Service allows an authorized attacker to bypass a security feature locally.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-28

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-81964

EUVD

EUVD-2026-99291

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-798	The product contains hard-coded credentials, such as a password or cryptographic key.

Attack-Flow Graph

Executive Summary

This vulnerability involves the use of hard-coded credentials in the Windows Update Orchestrator Service. An authorized attacker can exploit this to bypass a security feature locally on affected systems.

Impact Analysis

An attacker could gain unauthorized access or elevate privileges on your system by bypassing security features. This may allow them to install malicious software, steal data, or perform other harmful actions.

Compliance Impact

This vulnerability allows an attacker to bypass a security feature locally by exploiting hard-coded credentials in the Windows Update Orchestrator Service. This could undermine access controls and authentication mechanisms, which are critical for compliance with standards like GDPR and HIPAA that require strong security controls to protect sensitive data.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the hard-coded credentials issue in the Windows Update Orchestrator Service.

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