Medium5.5Microsoft Server

Medium [CVE-2021-26884] Windows Media Photo Codec Information Disclosure Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2021-26884 affecting Windows Server 2012 (Server Core installation), Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation).

CVE-2021-26884 Published Mar 11, 2021Updated by vendor Aug 19, 2026

CVE-2021-26884

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Windows Media Photo Codec Information Disclosure Vulnerability

Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 7 more.

Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server version 2004; Windows Server version 20H2; and 1 more.

Affected versions

Windows 10 Version 1507 10.0.10240.0 before 10.0.10240.18874
Windows 10 Version 1607 10.0.14393.0 before 10.0.14393.4283
Windows 10 Version 1803 10.0.0 before 10.0.17134.2087
Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.1817
Windows 10 Version 1809 10.0.0 before 10.0.17763.1817
Windows 10 Version 1909 10.0.0 before 10.0.18363.1440
Windows 10 Version 2004 10.0.0 before 10.0.19043.867
Windows 10 Version 20H2 10.0.0 before 10.0.19043.867
Windows 8.1 6.3.0 before 6.3.9600.19968
Windows Server 2012 6.2.9200.0 before 6.2.9200.23298
Windows Server 2012 (Server Core installation) 6.2.9200.0 before 6.2.9200.23298
Windows Server 2012 R2 6.3.9600.0 before 6.3.9600.19968

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

10.0.10240.18874
10.0.14393.4283
10.0.17134.2087
10.0.17763.1817
10.0.18363.1440
10.0.19043.867
6.3.9600.19968
6.2.9200.23298

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 10.0.10240.18874, 10.0.14393.4283, 10.0.17134.2087, 10.0.17763.1817, 10.0.18363.1440, 10.0.19043.867. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Discussion(0)

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