CVE-2025-46803
published 2025-05-26CVE-2025-46803: 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…
PriorityP421medium5CVSS 3.1
AVLACLPRLUIRSUCNIHAN
EPSS
0.20%
10.1th percentile
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.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | screen | — | — |
| gnu | screen | >= 0 < 5.0.1-r0 | 5.0.1-r0 |
| gnu | screen | >= 0 < 5.0.1-r0 | 5.0.1-r0 |
| gnu | screen | >= 0 < 5.0.1-r0 | 5.0.1-r0 |
| msrc | azl3_kernel_6.6.47.1-1_on_azure_linux_3.0 | — | — |
| msrc | azl3_kernel_6.6.51.1-5_on_azure_linux_3.0 | — | — |
| msrc | azure_linux_3.0_arm | — | — |
| msrc | azure_linux_3.0_x64 | — | — |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.15.0MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N
nvdv4.05.1MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv5.1MEDIUM
vendor_msrc5.5MEDIUM
vendor_debian5.1LOW
vendor_redhat5.1MEDIUM
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Red Hat
screen: Screen by Default Creates World Writable PTYs
vendor_redhat·2025-05-13·CVSS 5.1
CVE-2025-46803 [MEDIUM] CWE-282 screen: Screen by Default Creates World Writable PTYs
screen: Screen by Default Creates World Writable PTYs
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.
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.
Statement: The change in the default PTY mode from 0620 to 0622 in Screen represents a significant security vulnerability because it directly exposes privileged terminal sessions to unauthorized local modification. In multi-user environments, PTYs act as communication endpoints between user shells and the system, and world-writable PTYs (0622) allow any user on the system to inject arbit
Debian
CVE-2025-46803: screen - The default mode of pseudo terminals (PTYs) allocated by Screen was changed from...
vendor_debian·2025·CVSS 5.1
CVE-2025-46803 [MEDIUM] CVE-2025-46803: screen - The default mode of pseudo terminals (PTYs) allocated by Screen was changed from...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
Microsoft
drm/amdkfd: Check debug trap enable before write dbg_ev_file
vendor_msrc·2024-09-10·CVSS 5.5
CVE-2024-46803 [MEDIUM] CWE-476 drm/amdkfd: Check debug trap enable before write dbg_ev_file
drm/amdkfd: Check debug trap enable before write dbg_ev_file
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Reference: https://
OSV
CVE-2025-46803: 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
osv·2025-05-26·CVSS 5.1
CVE-2025-46803 [MEDIUM] CVE-2025-46803: 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 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.
GHSA
GHSA-g2cq-wg23-g8qw: 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
ghsa_unreviewed·2025-05-26
CVE-2025-46803 [MEDIUM] CWE-276 GHSA-g2cq-wg23-g8qw: 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 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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-05-26
Published