CVE-2026-62777

Analyzed Analyzed - Analysis Complete

Missing Authentication in Windows License Manager Leads to Privilege Escalation

Publication date: 2026-08-11

Last updated on: 2026-08-16

Assigner: Microsoft Corporation

Description

Missing authentication for critical function in Windows License Manager allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-11

Last Modified

2026-08-16

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-62777

EUVD

EUVD-2026-56382

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_1607	to 10.0.14393.9418 (exc)
microsoft	windows_10_1607	to 10.0.14393.9418 (exc)
microsoft	windows_10_1809	to 10.0.17763.9115 (exc)
microsoft	windows_10_1809	to 10.0.17763.9115 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7663 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7517 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9106 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2704 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9106 (exc)
microsoft	windows_server_2016	to 10.0.14393.9418 (exc)
microsoft	windows_server_2019	to 10.0.17763.9115 (exc)
microsoft	windows_server_2022	to 10.0.20348.5440 (exc)
microsoft	windows_server_2025	to 10.0.26100.33222 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This vulnerability is a missing authentication issue in the Windows License Manager. An authorized attacker can exploit it to elevate their privileges locally on a system.

Detection Guidance

This vulnerability involves missing authentication in Windows License Manager. Detection requires checking for unauthorized privilege escalation attempts via Windows License Manager functions. Monitor logs for unusual activity in License Manager processes or services. No specific commands are provided in the available resources.

Impact Analysis

An attacker could gain higher-level access to your system, allowing them to perform unauthorized actions such as installing malicious software or accessing sensitive data.

Compliance Impact

This vulnerability allows local privilege escalation due to missing authentication in Windows License Manager. Such unauthorized access could lead to data breaches or unauthorized system modifications, which may violate compliance requirements under GDPR (data protection) or HIPAA (health data security) if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows License Manager vulnerability. Monitor Microsoft's update guide for patches and install them promptly.

Hi! I’m here to help you understand CVE-2026-62777. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70