CVE-2021-26414 json
Windows DCOM Server Security Feature Bypass
published 2021-06-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13220
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 49.8%
- EPSS 49.8% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
Windows DCOM Server Security Feature Bypass
Patch / fix
- Microsoft Windows 10 Version 1809 10.0.17763.4131
- Microsoft Windows Server 2019 10.0.17763.4131
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.4131
- Microsoft Windows 10 Version 1909 10.0.18363.2344
- Microsoft Windows 10 Version 21H1 10.0.19043.1766
- Microsoft Windows Server 2022 10.0.20348.1607
- Microsoft Windows 10 Version 20H2 10.0.19042.2728
- Microsoft Windows 11 version 21H2 10.0.22000.1696
- Microsoft Windows 10 Version 21H2 10.0.19044.2728
- Microsoft Windows 10 Version 1507 10.0.10240.19802
- Microsoft Windows 10 Version 1607 10.0.14393.5786
- Microsoft Windows Server 2016 10.0.14393.5786
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.5786
- Microsoft Windows 7 6.1.7601.25984
- Microsoft Windows 7 Service Pack 1 6.1.7601.25984
- Microsoft Windows 8.1 6.3.9600.20402
- Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21966
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.21966
- Microsoft Windows Server 2008 Service Pack 2 6.0.6003.21966
- Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.26415
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.26415
- Microsoft Windows Server 2012 6.2.9200.24168
- Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.24168
- Microsoft Windows Server 2012 R2 6.3.9600.20865
- Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.20865
Exploit prediction
49.84% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Microsoft Windows 10 Version 1809
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows 10 Version 1909
- Microsoft Windows 10 Version 21H1
- Microsoft Windows Server 2022
- Microsoft Windows 10 Version 20H2
- Microsoft Windows 11 version 21H2
- Microsoft Windows 10 Version 21H2
- Microsoft Windows 10 Version 1507
- Microsoft Windows 10 Version 1607
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows 7
- Microsoft Windows 7 Service Pack 1
- Microsoft Windows 8.1
- Microsoft Windows Server 2008 Service Pack 2
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
- Microsoft Windows Server 2008 Service Pack 2
- Microsoft Windows Server 2008 R2 Service Pack 1
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 (Server Core installation)
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core installation)
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-26414
patch, vendor-advisory
-
packetstormsecurity.com
/files/163206/Windows-Kerberos-AppContainer-Enterprise-Authentication-Capability-Bypass.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-26414
- NVD CVE-2021-26414
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.