Vulnerability in Microsoft Windows Server 2008 R2 Service Pack 1
CVE-2021-26897
Windows DNS Server Remote Code Execution Vulnerability
EPSS: 0.110 (93.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.
Affected products
- Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.0
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core Installation) — versions 6.0.0
- Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.0
- Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.0
- Microsoft Windows Server 2008 Service Pack 2 (Server Core Installation) — versions 6.0.0
- Microsoft Windows Server 2012 — versions 6.2.0
- Microsoft Windows Server 2012 R2 — versions 6.3.0
- Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.0
- Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.0
- Microsoft Windows Server 2016 — versions 10.0.0
Public proof-of-concept exploits
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26897 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-26897?
- CVE-2021-26897 is a critical-severity vulnerability in Microsoft Windows Server 2008 R2 Service Pack 1. CVSS score: 9.8/10. Published 2021-03-11.
- How severe is CVE-2021-26897?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-26897 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.