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5.5Medium

CVE-2026-20833Windows Kerberos Information Disclosure Vulnerability

Microsoft Windows Server 2008 R2 Service Pack 1; Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation); Microsoft Windows Server 2008 Serv… Published: (10 months ago)

Description

Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.

Weakness (CWE): CWE-327

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
microsoft windows server 2008 r2
microsoft windows server 2008 R2 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – < 6.1.7601.28117
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – < 6.0.6003.23717
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – < 6.0.6003.23717
microsoft windows server 2008 sp2 6.0.6003.0 – < 6.0.6003.23717
Microsoft Windows Server 2012 6.2.9200.0 – < 6.2.9200.25868
Microsoft Windows Server 2012 R2 6.3.9600.0 – < 6.3.9600.22968
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – < 6.3.9600.22968
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – < 6.2.9200.25868
Microsoft Windows Server 2016 10.0.14393.0 – < 10.0.14393.8783
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < 10.0.14393.8783
Microsoft Windows Server 2019 10.0.17763.0 – < 10.0.17763.8276
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < 10.0.17763.8276
Microsoft Windows Server 2022 10.0.20348.0 – < 10.0.20348.4648
microsoft windows server 2022 23h2 < 10.0.25398.2092
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – < 10.0.25398.2092
Microsoft Windows Server 2025 10.0.26100.0 – < 10.0.26100.32230
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – < 10.0.26100.32230
microsoft windows server 23h2 10.0.25398.0 – < 10.0.25398.2092

References and patches

CPE matches (NVD) (10)
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8783
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.8276
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.4648
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* < 10.0.25398.2092
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.32230

Recent CVEs in the same product — Windows Server

7.8High
CVE-2026-119382

Windows TPM Elevation of Privilege Vulnerability

Microsoft Windows 10 Version 1607; Microsoft Windows 10 Version 1809; Microsoft Windows 10 Version 21H2; Microsoft Windows 10 Version 22H2

Heap-based buffer overflow in Windows TPM allows an authorized attacker to elevate privileges locally.