CVE-2021-26937
screen - security update
9.8
CRITICAL
CVSS 3.1
EPSS 12.7%
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.
How to fix CVE-2021-26937
To remediate CVE-2021-26937, upgrade the affected package to a fixed version below.
- Alpine/screen—upgrade to 4.6.2-r2 or later
- —upgrade to 4.8.0-5 or later
- —upgrade to 4.5.0-6+deb9u1 or later
- —upgrade to 4.6.2-3+deb10u1 or later
Is CVE-2021-26937 being exploited?
Moderate — EPSS is 12.7%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (4)
- from 0, < 4.6.2-r2
- from 0, < 4.8.0-5
- from 0, < 4.5.0-6+deb9u1
- from 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 |