CVE-2026-20833

CWE-327 — Broken Cryptographic Algorithm5 documents5 sources
Severity
5.5MEDIUM
EPSS
0.0%
top 91.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
17
Microsoft Windows Server 2008 R2 Service Pack 1Microsoft Windows Server 2008 R2 Service Pack 1 (server Core Installation)Microsoft Windows Server 2008 Service Pack 2+14 more
Timeline
PublishedJan 13

Description

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

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NExploitability: 1.8 | Impact: 3.6

Affected Packages16 packages

▶NVDmicrosoft/windows< 10.0.14393.8783+5
▶CVEListV5microsoft/windows_server_20126.2.9200.0 — 6.2.9200.25868
▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.8783
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8276
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.4648

🔴Vulnerability Details

2
CVEList
Windows Kerberos Information Disclosure Vulnerability↗2026-01-13
▶
GHSA
GHSA-qvf8-2q87-3fcr: Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally↗2026-01-13
▶

📋Vendor Advisories

1
Microsoft
Windows Kerberos Information Disclosure Vulnerability↗2026-01-13
▶

🕵️Threat Intelligence

1
Wiz
CVE-2026-20833 Impact, Exploitability, and Mitigation Steps | Wiz↗
▶
CVE-2026-20833 (MEDIUM CVSS 5.5) | Use of a broken or risky cryptograp | cvebase.io