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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00009.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Gnu
  • Screen

No data.

No data.

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Vendors Products
Gnu
  • Screen
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.
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://www.openwall.com/lists/oss-security/2025/05/13/6 cve-icon
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-46803 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-46803 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-46803 cve-icon
https://www.openwall.com/lists/oss-security/2025/05/12/1 cve-icon cve-icon cve-icon
History

Tue, 27 May 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 26 May 2025 16:30:00 +0000

Type Values Removed Values Added
References

Mon, 26 May 2025 15:15:00 +0000

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'}

Wed, 14 May 2025 02:30:00 +0000

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
cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2025-05-27T14:12:42.420Z

Reserved: 2025-04-30T11:28:04.728Z

Link: CVE-2025-46803

cve-icon Vulnrichment

Updated: 2025-05-26T16:04:08.726Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-05-26T15:15:19.910

Modified: 2025-05-28T15:01:30.720

Link: CVE-2025-46803

cve-icon Redhat

Severity : Important

Publid Date: 2025-05-13T16:41:25Z

Links: CVE-2025-46803 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-06-23T19:31:58Z