CVE-2026-69365

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Out-of-Bounds Read in Microsoft LSA Server

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Microsoft Local Security Authority Server (lsasrv) allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-09

AI Q&A

2026-09-09

EPSS Evaluated

N/A

NVD

CVE-2026-69365

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	local_security_authority_server	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Microsoft's Local Security Authority Server (lsasrv). It allows an authorized attacker to elevate their privileges over a network by exploiting improper memory access.

Impact Analysis

An attacker could gain elevated privileges, potentially allowing them to take control of affected systems, steal data, or install malicious software. This could impact confidentiality, integrity, and availability of systems.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating compliance requirements for GDPR (data protection) and HIPAA (health information privacy). Organizations may face penalties or legal consequences if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Local Security Authority Server (lsasrv) vulnerability. Ensure all systems are updated promptly to prevent unauthorized privilege escalation over the network.

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