CVE-2025-46803: medium-severity vulnerability in screen
Screen creates by default world-writable PTYs
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.3%
The default mode of pseudo terminals (PTYs) allocated by Screen was changed from 0620 to 0622, thereby allowing anyone to write to any Screen PTYs in the system.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
screenRelated CVEs — screen
In the same product, most dangerous first.
CVE-2025-23395HIGHLocal root exploit via `logfile_reopen()` in screen 5.0.0 with setuid-root bit setEPSS 0.3%CVE-2025-46804LOWScreen 5.0.0 and older versions allow file existence tests when installed setuid-rootEPSS 0.2%CVE-2025-46805MEDIUMScreen has a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-rootEPSS 0.2%