CVE-2025-23395

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

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

Category

7.3
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.01%
Published at:
Updated at:

References

Link Tags
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23395
https://www.openwall.com/lists/oss-security/2025/05/12/1

Frequently Asked Questions

What is the severity of CVE-2025-23395?
CVE-2025-23395 has been scored as a high severity vulnerability.
How to fix CVE-2025-23395?
To fix CVE-2025-23395, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-23395 being actively exploited in the wild?
It is possible that CVE-2025-23395 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-23395?
CVE-2025-23395 affects .
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