CVE-2025-46802

Publication date 8 May 2025

Last updated 26 January 2026

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

For a short time they PTY is set to mode 666, allowing any user on the system to connect to the screen session.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
screen	25.10 questing	Not affected
	25.04 plucky	Ignored end of life, was needs-triage
	24.10 oracular	Ignored end of life, was needs-triage
	24.04 LTS noble	Fixed 4.9.1-1ubuntu1
	22.04 LTS jammy	Fixed 4.9.0-1ubuntu0.1
	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

This CVE also affects older versions, not just 5.0.0 The commit listed below may introduce a regression, see oss-security post Ubuntu does not install screen setuid-root

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=049

Severity score breakdown

Parameter	Value
Base score	6.0 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	Low
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-7978-1
GNU Screen vulnerabilities
26 January 2026