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CVE-2026-20833
MSR
MediumConfirmedExploit available

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

CVSS
5.5
Medium
EPSS
0.00
p13
Published
2026-01-01
Updated
2026-01-01
Description

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

Tags · CWE
Crypto
CWE-327
CAPEC-20
CAPEC-97
CAPEC-459
CAPEC-473
CAPEC-475
CAPEC-608
CAPEC-614
Affected products
Windows_server_2008Windows_server_2012Windows_server_2016 < 10.0.14393.8783Windows_server_2019 < 10.0.17763.8276Windows_server_2022 < 10.0.20348.4648Windows_server_2022_23h2 < 10.0.25398.2092Windows_server_2025 < 10.0.26100.32230
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Timeline
2026-01-01
Published
2026-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: L
Local (L)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: N
None (N)
Availability Impact
A: N
None (N)
Exploit indicators
EPSS
0.000 · p13
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-473 · CWE-327
└ via CAPEC-473 · CWE-327
Known exploits — Сканер-ВС
CVE-2026-20833
github-poc · https://github.com/v-jfanca/cve-2026-20833-rc4-kerberos
Enterprise
Affected software
ProductVendorStatus
windows_server_2008*Tracked
windows_server_2012*Tracked
windows_server_2016*Tracked
windows_server_2019*Tracked
windows_server_2022*Tracked
windows_server_2022_23h2*Tracked
windows_server_2025*Tracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
WindowsMicrosoftTracked
Source databases
MSR
CVE
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