Vulnerability · Published May 26, 2025 · Assigned by suse
CVE-2025-46805Screen has a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root
Medium 5.5
In plain English
A medium-severity security flaw in screen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 92.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | screen | 4.9.1_git20250512-r0 | ALPINE-CVE-2025-46805 |
| Alpine:v3.21 | screen | 5.0.1-r0 | ALPINE-CVE-2025-46805 |
| Alpine:v3.22 | screen | 5.0.1-r0 | ALPINE-CVE-2025-46805 |
| Alpine:v3.23 | screen | 5.0.1-r0 | ALPINE-CVE-2025-46805 |
| Alpine:v3.24 | screen | 5.0.1-r0 | ALPINE-CVE-2025-46805 |
| Debian:12 | screen | no fix listed | DEBIAN-CVE-2025-46805 |
| Debian:13 | screen | 4.9.1-3 | DEBIAN-CVE-2025-46805 |
| Debian:14 | screen | 4.9.1-3 | DEBIAN-CVE-2025-46805 |
| Ubuntu:22.04:LTS | screen | 4.9.0-1ubuntu0.1 | USN-7978-1 |
| Ubuntu:22.04:LTS | screen | 4.9.0-1ubuntu0.1 | UBUNTU-CVE-2025-46805 |
| Ubuntu:24.04:LTS | screen | 4.9.1-1ubuntu1 | UBUNTU-CVE-2025-46805 |
| Ubuntu:24.04:LTS | screen | 4.9.1-1ubuntu1 | USN-7978-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| screen | 5.0. – through 5.0.0? – through 4.9.1 |
Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H