CVE-2025-46803

Screen creates by default world-writable PTYs

Published May 26, 2025 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-28069 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in Screen. The default mode for pseudo-terminals (PTYs) allocated by Screen was changed from 0620 to 0622. This vulnerability allows public writes to any PTYs in the system. 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.
Title screen: Screen by Default Creates World Writable PTYs Screen creates by default world-writable PTYs
Weaknesses CWE-276
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 5.1, 'vector': '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'}

cvssV3_1

{'score': 5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N'}

Type Values Removed Values Added
Description A flaw was found in Screen. The default mode for pseudo-terminals (PTYs) allocated by Screen was changed from 0620 to 0622. This vulnerability allows public writes to any PTYs in the system.
Title screen: Screen by Default Creates World Writable PTYs
Weaknesses CWE-282
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

threat_severity

Important

Weaknesses

Sources

Status
PUBLISHED
Assigner
suse
Published
Updated
May 27, 2025, 2:12 PM
Reserved
Apr 30, 2025, 11:28 AM
Status
Deferred
Published
May 26, 2025, 3:15 PM
Modified
Jun 17, 2026, 9:26 AM
Severity
Important
Public date
May 13, 2025, 4:41 PM