CVE-2026-61347

Analyzed Analyzed - Analysis Complete

Buffer Over-Read in Windows Event Logging Service

Publication date: 2026-08-11

Last updated on: 2026-08-16

Assigner: Microsoft Corporation

Description

Buffer over-read in Windows Event Logging Service allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-16

Generated

2026-08-31

AI Q&A

2026-08-11

EPSS Evaluated

2026-08-30

NVD

CVE-2026-61347

EUVD

EUVD-2026-56321

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
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-126	The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a buffer over-read in the Windows Event Logging Service. It allows an authorized attacker to read beyond the intended memory buffer, potentially exposing sensitive information stored in memory.

Detection Guidance

This vulnerability involves a buffer over-read in the Windows Event Logging Service that allows local information disclosure. Detection may require monitoring for unusual event log access patterns or crashes in the service. Check Windows Event Viewer for errors related to Event Logging Service and review system logs for anomalies.

Impact Analysis

An attacker could exploit this to locally disclose sensitive information, such as system or user data, which could be used for further attacks or unauthorized access.

Compliance Impact

This vulnerability allows unauthorized local information disclosure through a buffer over-read in the Windows Event Logging Service. Such information exposure could potentially violate data protection requirements under GDPR (e.g., Article 32 on integrity and confidentiality) and HIPAA (e.g., Security Rule on safeguarding protected health information) if sensitive data is involved.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Event Logging Service vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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