Home/CVE/Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose informati
CVE

CVE-2026-20833

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

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

MEDIUM · CVSS 5.5 EPSS 0.00042
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-327Use of a Broken or Risky Cryptographic Algorithm
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Affected Products & Versions

7
microsoft windows server 2008all versions
microsoft windows server 2012all versions
microsoft windows server 2016< 10.0.14393.8783
microsoft windows server 2019< 10.0.17763.8276
microsoft windows server 2022< 10.0.20348.4648
microsoft windows server 2022 23h2< 10.0.25398.2092
microsoft windows server 2025< 10.0.26100.32230
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Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Jan 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2026-20833Information Disclosure
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