CVE-2026-106553: CWE-669 Incorrect Resource Transfer Between Spheres in OpenBSD OpenSSH
Description
CVE-2026-106553 is a low severity vulnerability in OpenSSH versions before 10.6 where credentials may incorrectly persist after a failed GSSAPIAuthentication attempt. This issue relates to improper resource handling in sshd, potentially allowing credential persistence beyond intended scope.
CVSS v3.1
Score 2.2low
Affected software
OpenBSD
OpenSSH
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-669) affects OpenSSH sshd prior to version 10.6. When a GSSAPIAuthentication attempt fails, credentials can incorrectly persist due to improper resource transfer between security contexts (spheres). The CVSS 3.1 score is 2.2, indicating low severity with limited confidentiality impact and no integrity or availability impact. The attack vector is local with high attack complexity and requires low privileges with user interaction.
Potential Impact
The impact is limited to potential unintended persistence of credentials after a failed GSSAPIAuthentication attempt. This could lead to minor confidentiality concerns but does not affect integrity or availability. There are no known exploits in the wild.
Mitigation Recommendations
No vendor advisory or patch links are provided. Patch status is not yet confirmed — check the OpenBSD or OpenSSH vendor advisory for current remediation guidance. Until a fix is available, consider disabling GSSAPIAuthentication if feasible or monitoring authentication attempts closely.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-10-06T20:25:45.450Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac55ec42cdf04f656dd7fcd
Added to database: 10/06/2026, 20:49:08 UTC
Last enriched: 10/06/2026, 21:03:47 UTC
Last updated: 10/06/2026, 21:08:15 UTC
Views: 3
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