VULNERABILITY INTELLIGENCE

CVE-2021-26937

CVSS score9.8 CRITICAL

EPSS probability9.15%

CISA KEVNot currently listed

Published2021-02-09

Last modified2026-06-17

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.