CVE-2021-27135
- Source
- https://cve.org/CVERecord?id=CVE-2021-27135
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27135.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-27135
- Downstream
ALPINE (1)
ALSA (1)
AZL (1)
CLEANSTART (1)
CLSA (1)
DEBIAN (1)
MGASA (1)
OESA (1)
RLSA (1)
UBUNTU (1)
- Related
- Published
- 2021-02-10T16:15:13Z
- Modified
- 2026-10-20T14:17:20Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- Database specific
{ "unresolved_ranges": [ { "cpes": [ "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "9.0" }, { "last_affected": "9.0" } ], "source": "CPE_STRING" } ], "vendor_product": "debian:debian_linux" }, { "cpes": [ "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*" ], "extracted_events": [ { "range": [ { "introduced": "33" }, { "last_affected": "33" } ], "source": "CPE_STRING" } ], "vendor_product": "fedoraproject:fedora" } ] }- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35LK2ZXEIJUOGOA7FV2TJL3L6LFJ4X5S/
- http://seclists.org/fulldisclosure/2021/May/52
- http://www.openwall.com/lists/oss-security/2021/02/10/7
- https://access.redhat.com/security/cve/CVE-2021-27135
- https://invisible-island.net/xterm/xterm.log.html
- https://lists.debian.org/debian-lts-announce/2021/02/msg00019.html
- https://security.gentoo.org/glsa/202208-22
- https://www.openwall.com/lists/oss-security/2021/02/09/7
- https://www.openwall.com/lists/oss-security/2021/02/09/9
- https://bugzilla.redhat.com/show_bug.cgi?id=1927559
- https://bugzilla.suse.com/show_bug.cgi?id=1182091
- https://news.ycombinator.com/item?id=26524650
- https://github.com/ThomasDickey/xterm-snapshots/commit/82ba55b8f994ab30ff561a347b82ea340ba7075c
Affected packages
Git / github.com/thomasdickey/xterm-snapshots
Affected ranges
- Type
- GIT
- Repo
- https://github.com/thomasdickey/xterm-snapshots
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "cpe": "cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:*", "range": [ { "introduced": "0" }, { "fixed": "366" } ], "source": "CPE_RANGE" }, { "range": [ { "fixed": "82ba55b8f994ab30ff561a347b82ea340ba7075c" } ], "source": "REFERENCES_COMMIT" } ] }
Affected versions
Other
X11R5
X11R6_1rel
X11R6_3rel
XFree86-3_1_2E
XFree86-3_1_2F
XFree86-3_1_2G
XFree86-3_2
XFree86-3_2A
XFree86-3_3
XFree86-3_9Ab
XFree86-3_9Ac
XFree86-3_9Ad
XFree86-3_9Af
XFree86-3_9Ag
XFree86-3_9Ah
XFree86-3_9Ai
XFree86-3_9Aj
XFree86-3_9Nb
XFree86-3_9Nc
XFree86-3_9Nk
XFree86-3_9Nl
XFree86-3_9Nn
XFree86-3_9Ns
XFree86-3_9Nx
XFree86-3_9Nz
XFree86-3_9P
XFree86-3_9Pe
XFree86-3_9Pg
XFree86-3_9Pi
XFree86-3_9Pn
XFree86-3_9Pq
XFree86-3_9Ps
XFree86-3_9Pv
XFree86-3_9Px
XFree86-3_9_15
XFree86-3_9_15c
XFree86-3_9_16b
XFree86-3_9_16d
XFree86-3_9_17
XFree86-3_9_17a
XFree86-3_9_17e
XFree86-3_9_17f
XFree86-3_9_18
XFree86-3_9k
XFree86-3_9m
XFree86-3_9n
XFree86-3_9q
XFree86-3_9s
XFree86-3_9t
XFree86-3_9w
XFree86-3_9y
XFree86-4_0_1c
XFree86-4_0_1d
XFree86-4_0_1e
XFree86-4_0b
XFree86-4_0c
XFree86-4_0d
pre-cachedGCs
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Database specific
source
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vanir_signatures_modified
"2026-10-20T14:17:20Z"