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.
CVSS Details
- CVSS 4.0 Base Score: 5.7 (MEDIUM)
- CVSS 4.0 Vector: (CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/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)
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade screen | Aug 8, 2025 | May 26, 2025 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | May 26, 2025 |
| Debian | — | Upgrade screenNo solution exists | May 15, 2025 | May 15, 2025 |
| Freebsd | — | Upgrade screen | Dec 10, 2025 | May 21, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade screen | Sep 15, 2025 | Jul 18, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade screen | Aug 13, 2025 | Jul 18, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade screen | Jul 21, 2025 | May 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade screen | Aug 13, 2025 | Jul 18, 2025 |
| Redhat_linux | — | No solution exists | Jul 31, 2025 | May 12, 2025 |
| Ubuntu | — | Upgrade screen | Jan 27, 2026 | May 26, 2025 |
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