CVE-2021-26937
CRITICAL9.8EPSS 12.7%screen - security update
Published: 2/9/2021Modified: 4/28/2026
Description
encoding.c in GNU Screen through 4.8.0 allows remote attackers to cause a denial of service (invalid write access and application crash) or possibly have unspecified other impact via a crafted UTF-8 character sequence.
Affected packages (4)
- Alpine/screenfrom 0, < 4.6.2-r2
- Debian/screenfrom 0, < 4.8.0-5
- Debian/screenfrom 0, < 4.5.0-6+deb9u1
- Debian/screenfrom 0, < 4.6.2-3+deb10u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |