CVE-2025-23395 - CVE House
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Status published High CVE-2025-23395

Local root exploit via `logfile_reopen()` in screen 5.0.0 with setuid-root bit set

Vulnerability Description

Screen 5.0.0 when it runs with setuid-root privileges does not drop privileges while operating on a user supplied path. This allows unprivileged users to create files in arbitrary locations with `root` ownership, the invoking user's (real) group ownership and file mode 0644. All data written to the Screen PTY will be logged into this file, allowing to escalate to root privileges

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Matthias Gerstner, SUSE

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Affected Vendor

Affected Software

Unknown
Vulnerable Versions:
5.0

Timeline

Official Publish: May 26th, 2025
Last Modified: May 27th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-271

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.