CVE-2026-102199

Undergoing Analysis Undergoing Analysis - In Progress

Stack-based Buffer Overflow in Windows Codecs Library

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to deny service over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-102199

EUVD

EUVD-2026-100354

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
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 2012 6.2.9200.0
Microsoft	Windows	Server 2012 (Server Core installation) 6.2.9200.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
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-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow vulnerability in the Microsoft Windows Codecs Library. It allows an unauthorized attacker to cause a denial of service over a network by exploiting a flaw that overwrites memory on the stack.

Impact Analysis

An attacker could exploit this to crash affected systems remotely, leading to service disruptions. Systems running vulnerable Windows versions may become unresponsive or require a restart.

Compliance Impact

This vulnerability enables denial of service attacks, which could disrupt critical services handling sensitive data. GDPR requires ensuring data availability and security, while HIPAA mandates protecting health information. A denial of service could violate these requirements by impairing access to protected data.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Codecs Library vulnerability. Monitor Microsoft's update guide for patches and install them as soon as available.

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