CVE-2026-20833: CWE-327: Use of a Broken or Risky Cryptographic Algorithm in Microsoft Windows Server 2008 R2 Service Pack 1
Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20833) affects Windows Server 2008 R2 SP1 and arises from the use of a broken or risky cryptographic algorithm within the Windows Kerberos authentication protocol. An attacker with local authorized access can exploit this weakness to disclose information. The CVSS 3.1 vector indicates low attack complexity and privileges required, with no user interaction needed, and the primary impact is on confidentiality. The vulnerability is classified under CWE-327, which pertains to the use of weak cryptographic algorithms. A patch is available to remediate this issue.
Potential Impact
An authorized local attacker can leverage the use of a broken or risky cryptographic algorithm in Windows Kerberos to disclose sensitive information. The impact is limited to confidentiality loss without affecting integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability and should be applied to affected Windows Server 2008 R2 SP1 systems to remediate the issue. No additional mitigation steps are indicated beyond applying the official fix.
CVE-2026-20833: CWE-327: Use of a Broken or Risky Cryptographic Algorithm in Microsoft Windows Server 2008 R2 Service Pack 1
Description
Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20833) affects Windows Server 2008 R2 SP1 and arises from the use of a broken or risky cryptographic algorithm within the Windows Kerberos authentication protocol. An attacker with local authorized access can exploit this weakness to disclose information. The CVSS 3.1 vector indicates low attack complexity and privileges required, with no user interaction needed, and the primary impact is on confidentiality. The vulnerability is classified under CWE-327, which pertains to the use of weak cryptographic algorithms. A patch is available to remediate this issue.
Potential Impact
An authorized local attacker can leverage the use of a broken or risky cryptographic algorithm in Windows Kerberos to disclose sensitive information. The impact is limited to confidentiality loss without affecting integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability and should be applied to affected Windows Server 2008 R2 SP1 systems to remediate the issue. No additional mitigation steps are indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.375Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668adda60475309f9adff0
Added to database: 1/13/2026, 6:11:41 PM
Last enriched: 4/3/2026, 12:43:46 PM
Last updated: 5/8/2026, 11:41:48 AM
Views: 138
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