CVE-2023-24626: GNU Screen

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

socket.c in GNU Screen through 4.9.0, when installed setuid or setgid (the default on platforms such as Arch Linux and FreeBSD), allows local users to send a privileged SIGHUP signal to any PID, causing a denial of service or disruption of the target process.

Affected products

• GNU Screen: up to and including 4.9.0

Published 2023-04-08. Last modified 2026-06-17.