CVE-2025-46805

Publication date 8 May 2025

Last updated 3 July 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Read the notes from the security team

Why is this CVE low priority?

Ubuntu does not install screen setuid-root

Learn more about Ubuntu priority

Status

Show unmaintained releases

Package	Ubuntu Release	Status
screen	25.10 questing	Needs evaluation
	25.04 plucky	Needs evaluation
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Needs evaluation
	20.04 LTS focal	Needs evaluation
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Needs evaluation

Notes

mdeslaur

also affects older version when setuid-root Ubuntu does not install screen setuid-root, so marking this CVE as low.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
screen	Upstream: ?id=161

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H