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Status published
Critical
CVE-2021-27135
xterm before Patch #366 allows remote attackers to execute arbitrary...
Vulnerability Description
xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combining 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
- https://www.openwall.com/lists/oss-security/2021/02/09/7
- https://www.openwall.com/lists/oss-security/2021/02/09/9
- http://www.openwall.com/lists/oss-security/2021/02/10/7
- https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
- https://news.ycombinator.com/item?id=26524650
- https://access.redhat.com/security/cve/CVE-2021-27135
- https://bugzilla.redhat.com/show_bug.cgi?id=1927559
- https://invisible-island.net/xterm/xterm.log.html
- https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
- https://bugzilla.suse.com/show_bug.cgi?id=1182091
- http://seclists.org/fulldisclosure/2021/May/52
- https://security.gentoo.org/glsa/202208-22
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Affected Vendor
invisible-island
View all reports →Affected Software
xterm, debian linux, fedora
Vulnerable Versions:
0, 9.0, 33
Timeline
Official Publish:
February 10th, 2021
Last Modified:
August 3rd, 2024
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.