CVE-2021-26937 - CVE House
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Status published Critical CVE-2021-26937

encoding.c in GNU Screen through 4.8.0 allows remote attackers to...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

screen, debian linux, fedora
Vulnerable Versions:
0, 9.0, 10.0, 32, 33

Timeline

Official Publish: February 9th, 2021
Last Modified: May 9th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.