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5.5

Windows Media Photo Codec Leaks Private Data

CVE-2021-26884 · published 5 years ago
Summary

The Windows Media Photo Codec in Windows allows attackers to access sensitive information. This information can be used to launch further attacks or gain unauthorized access to systems. To protect your system, ensure you have the latest Windows updates installed and consider disabling the Windows Media Photo Codec if not in use.

What to do
  • Update microsoft windows 10 version 1507 to version 10.0.10240.18874 or later.
  • Update microsoft windows 10 version 1607 to version 10.0.14393.4283 or later.
  • Update microsoft windows 10 version 1803 to version 10.0.17134.2087 or later.
  • Update microsoft windows 10 version 1809 to version 10.0.17763.1817 or later.
  • Update microsoft windows 10 version 1909 to version 10.0.18363.1440 or later.
  • Update microsoft windows 10 version 2004 to version 10.0.19043.867 or later.
  • Update microsoft windows 10 version 20h2 to version 10.0.19043.867 or later.
  • Update microsoft windows 8.1 to version 6.3.9600.19968 or later.
  • Update microsoft windows server 2012 to version 6.2.9200.23298 or later.
  • Update microsoft windows server 2012 (server core installation) to version 6.2.9200.23298 or later.
  • Update microsoft windows server 2012 r2 to version 6.3.9600.19968 or later.
  • Update microsoft windows server 2012 r2 (server core installation) to version 6.3.9600.19968 or later.
  • Update microsoft windows server 2016 to version 10.0.14393.4283 or later.
  • Update microsoft windows server 2016 (server core installation) to version 10.0.14393.4283 or later.
  • Update microsoft windows server 2019 to version 10.0.17763.1817 or later.
  • Update microsoft windows server 2019 (server core installation) to version 10.0.17763.1817 or later.
  • Update microsoft windows server version 2004 to version 10.0.19043.867 or later.
  • Update microsoft windows server version 20h2 to version 10.0.19043.867 or later.
  • Update microsoft windows server, version 1909 (server core installation) to version 10.0.18363.1440 or later.
Affected software
VendorProductAffected versions
microsoft windows 10 version 1507 < 10.0.10240.18874
microsoft windows 10 version 1607 < 10.0.14393.4283
microsoft windows 10 version 1803 < 10.0.17134.2087
microsoft windows 10 version 1809 < 10.0.17763.1817
microsoft windows 10 version 1909 < 10.0.18363.1440
microsoft windows 10 version 2004 < 10.0.19043.867
microsoft windows 10 version 20h2 < 10.0.19043.867
microsoft windows 8.1 < 6.3.9600.19968
microsoft windows server 2012 < 6.2.9200.23298
microsoft windows server 2012 (server core installation) < 6.2.9200.23298
microsoft windows server 2012 r2 < 6.3.9600.19968
microsoft windows server 2012 r2 (server core installation) < 6.3.9600.19968
microsoft windows server 2016 < 10.0.14393.4283
microsoft windows server 2016 (server core installation) < 10.0.14393.4283
microsoft windows server 2019 < 10.0.17763.1817
microsoft windows server 2019 (server core installation) < 10.0.17763.1817
microsoft windows server version 2004 < 10.0.19043.867
microsoft windows server version 20h2 < 10.0.19043.867
microsoft windows server, version 1909 (server core installation) < 10.0.18363.1440
microsoft windows_10 20h2
1607
1803
1809
1909
2004
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
microsoft windows_8.1 All versions
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
microsoft windows_rt_8.1 All versions
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
microsoft windows_server_2012 r2
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
microsoft windows_server_2016 20h2
1909
2004
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
microsoft windows_server_2019 All versions
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
Original advisory text
Windows Media Photo Codec Information Disclosure Vulnerability
Windows Media Photo Codec Information Disclosure Vulnerability
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Timeline
Published11 Mar 2021
Updated31 Oct 2026
First seen19 Aug 2026
Sources
CVE-2021-26884 · NVD
CVE-2021-26884 · MITRE
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