CVE-2026-93658: Improper Preservation of Permissions in uutils coreutils
uutils coreutils versions before 0.10.0 apply setuid or setgid mode to install destinations before finalizing ownership changes, allowing privileged users to leave setuid executables owned by the privileged invoker when ownership changes fail. Attackers can execute leftover setuid files with elevated privileges when ownership change operations fail on capability-restricted systems.
AI Analysis
Technical Summary
The vulnerability in uutils coreutils before version 0.10.0 arises because the software applies setuid or setgid mode to installation destinations prior to completing ownership changes. If the ownership change operation fails, especially on capability-restricted systems, privileged users can leave behind setuid executables owned by themselves rather than the intended owner. This misconfiguration can be exploited to execute these leftover setuid files with elevated privileges, posing a security risk.
Potential Impact
Attackers with privileged access can exploit this vulnerability to execute leftover setuid executables with elevated privileges if ownership changes fail during installation. This can lead to unauthorized privilege escalation on affected systems. The CVSS 4.0 score of 7.3 (high severity) reflects the significant impact of this vulnerability under conditions of local access with high attack complexity and partial privileges required.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid running installation processes on capability-restricted systems where ownership changes might fail, or verify ownership and permissions of installed files manually to ensure no setuid executables remain improperly owned.
CVE-2026-93658: Improper Preservation of Permissions in uutils coreutils
Description
uutils coreutils versions before 0.10.0 apply setuid or setgid mode to install destinations before finalizing ownership changes, allowing privileged users to leave setuid executables owned by the privileged invoker when ownership changes fail. Attackers can execute leftover setuid files with elevated privileges when ownership change operations fail on capability-restricted systems.
CVSS v4.0
Score 7.3high
Affected software
uutils
coreutils
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in uutils coreutils before version 0.10.0 arises because the software applies setuid or setgid mode to installation destinations prior to completing ownership changes. If the ownership change operation fails, especially on capability-restricted systems, privileged users can leave behind setuid executables owned by themselves rather than the intended owner. This misconfiguration can be exploited to execute these leftover setuid files with elevated privileges, posing a security risk.
Potential Impact
Attackers with privileged access can exploit this vulnerability to execute leftover setuid executables with elevated privileges if ownership changes fail during installation. This can lead to unauthorized privilege escalation on affected systems. The CVSS 4.0 score of 7.3 (high severity) reflects the significant impact of this vulnerability under conditions of local access with high attack complexity and partial privileges required.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid running installation processes on capability-restricted systems where ownership changes might fail, or verify ownership and permissions of installed files manually to ensure no setuid executables remain improperly owned.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-18T13:30:25.933Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aad6e9d55bf5e2cf5463699
Added to database: 09/18/2026, 17:02:21 UTC
Last enriched: 09/18/2026, 17:16:31 UTC
Last updated: 09/19/2026, 01:21:11 UTC
Views: 10
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