CVE-2021-26937

CriticalCVSS 9.8/10Last modified Jun 17, 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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-88

Affected software

No affected versions have been published.

Timeline

Published
Feb 9, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-26937: Critical severity, CVSS 9.8 | Vulnix