CVE catalog

CVE-2025-46805

GNU Screen vulnerabilities

Severity: Medium · CVSS 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published: May 8, 2025, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.18% · Oct 25, 2026

Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	screen	sid	`5.0.2-1`	fixed
Debian	screen	forky	`5.0.2-1`	fixed
Debian	screen	trixie	`4.9.1-3`	fixed
Debian	screen	bookworm	`4.9.0-4`	vulnerable
Ubuntu	screen	noble	Not reported	vulnerable
Ubuntu	screen	noble	`4.9.1-1ubuntu1`	fixed
Alpine	screen	3.18	`4.9.1_git20250512-r0`	fixed
Alpine	screen	3.19	`4.9.1_git20250512-r0`	fixed
Alpine	screen	3.20	`4.9.1_git20250512-r0`	fixed
Alpine	screen	3.21	`5.0.1-r0`	fixed
Alpine	screen	3.22	`5.0.1-r0`	fixed
Alpine	screen	3.23	`5.0.1-r0`	fixed
Alpine	screen	3.24	`5.0.1-r0`	fixed
Ubuntu	screen	pro	`4.6.1-1`	vulnerable
Ubuntu	screen	pro	`4.6.2-1`	vulnerable
Ubuntu	screen	pro	`4.6.2-1ubuntu1`	vulnerable
Ubuntu	screen	pro	`4.6.2-1ubuntu1.1`	vulnerable
Ubuntu	screen	pro	`4.6.2-1ubuntu1.1+esm1`	vulnerable
Ubuntu	screen	20.04	`4.6.2-3build1`	vulnerable
Ubuntu	screen	20.04	`4.7.0-1`	vulnerable
Ubuntu	screen	20.04	`4.8.0-1`	vulnerable
Ubuntu	screen	20.04	`4.8.0-1ubuntu0.1`	vulnerable
Ubuntu	screen	22.04	`4.8.0-6`	vulnerable
Ubuntu	screen	22.04	`4.8.0-6build1`	vulnerable
Ubuntu	screen	22.04	`4.8.0-7`	vulnerable
Ubuntu	screen	22.04	`4.9.0-1`	vulnerable
Ubuntu	screen	22.04	`4.9.0-1ubuntu0.1`	fixed
Ubuntu	screen	24.04	`4.9.0-4`	vulnerable
Ubuntu	screen	24.04	`4.9.1-1`	vulnerable
Ubuntu	screen	24.04	`4.9.1-1build1`	vulnerable
Ubuntu	screen	24.04	`4.9.1-1ubuntu1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	screen	source	sid	`4.9.1-3`	unimportant	Not reported	Not reported
Debian	screen	source	forky	`4.9.1-3`	unimportant	Not reported	Not reported
Debian	screen	source	trixie	`4.9.1-3`	unimportant	Not reported	Not reported
Debian	screen	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported
Ubuntu	screen	deb	noble	`4.9.1-1ubuntu1`	Not reported	Not reported	Not reported
Alpine	screen	apk	3.18	`4.9.1_git20250512-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.19	`4.9.1_git20250512-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.20	`4.9.1_git20250512-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.21	`5.0.1-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.22	`5.0.1-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.23	`5.0.1-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Alpine	screen	apk	3.24	`5.0.1-r0`	Not reported	ALPINE-CVE-2025-46805	Not reported
Ubuntu	screen	deb	22.04	`4.9.0-1ubuntu0.1`	Not reported	UBUNTU-CVE-2025-46805	Not reported
Ubuntu	screen	deb	24.04	`4.9.1-1ubuntu1`	Not reported	UBUNTU-CVE-2025-46805	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[screen]Affected
Details (2)
- 4.9.0-4 · amd64 · bookworm
  Affected
  usn · screen · debian · bookworm; usn · screen · debian · 12
- 4.9.0-4 · arm64 · bookworm
  Affected
  usn · screen · debian · bookworm; usn · screen · debian · 12

[Debian 13 (Trixie)]

[screen]Fixed
Details (2)
- 4.9.1-3 · amd64 · trixie
  Fixed · Fixed: 4.9.1-3
  usn · screen · debian · 13
- 4.9.1-3 · arm64 · trixie
  Fixed · Fixed: 4.9.1-3
  usn · screen · debian · 13

Observed: Oct 24, 2026, 10:30:24 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [Ubuntu Security Notices (USN)]