CVE catalog
CVE-2021-27135
xterm: CVE-2021-27135
- Severity
- Critical · CVSS 9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 7.84% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | xterm | sid | 412-1 | fixed |
| Debian | xterm | forky | 412-1 | fixed |
| Debian | xterm | trixie | 398-1 | fixed |
| Debian | xterm | bookworm | 379-1 | fixed |
| Ubuntu | xterm | 16.04 | 318-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 16.04 | 318-2ubuntu2 | vulnerable |
| Ubuntu | xterm | 16.04 | 322-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 16.04 | 322-1ubuntu1.2 | fixed |
| Ubuntu | xterm | 18.04 | 324-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu2 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu2.2 | fixed |
| Ubuntu | xterm | 20.04 | 348-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 20.04 | 353-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 20.04 | 353-1ubuntu1.20.04.2 | fixed |
| Suse | xterm | linux enterprise high performance computing 15-espos | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise high performance computing 15-ltss | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise high performance computing 15 sp1-espos | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise high performance computing 15 sp1-ltss | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise server 15-ltss | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise server 15 sp1-bcl | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise server 15 sp1-ltss | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise server for sap applications 15 | 330-4.3.1 | fixed |
| Suse | xterm | linux enterprise server for sap applications 15 sp1 | 330-4.3.1 | fixed |
| Suse | xterm | manager proxy 4.0 | 330-4.3.1 | fixed |
| Suse | xterm | manager retail branch server 4.0 | 330-4.3.1 | fixed |
| Suse | xterm | manager server 4.0 | 330-4.3.1 | fixed |
| Suse | xterm | enterprise storage 6 | 330-4.3.1 | fixed |
| Suse | xterm | hpe helion openstack 8 | 308-5.3.1 | fixed |
| Suse | xterm | openstack cloud 8 | 308-5.3.1 | fixed |
| Suse | xterm | openstack cloud 9 | 308-5.3.1 | fixed |
| Suse | xterm | openstack cloud crowbar 8 | 308-5.3.1 | fixed |
| Suse | xterm | openstack cloud crowbar 9 | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server for sap applications 12 sp3 | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server for sap applications 12 sp4 | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server 12 sp2-bcl | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server 12 sp3-ltss | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server 12 sp3-bcl | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server 12 sp4-ltss | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server 12 sp5 | 308-5.3.1 | fixed |
| Suse | xterm | linux enterprise server for sap applications 12 sp5 | 308-5.3.1 | fixed |
| Opensuse | xterm | leap 15.3 | 330-11.3.1 | fixed |
| Suse | xterm | linux enterprise module for basesystem 15 sp2 | 330-11.3.1 | fixed |
| Suse | xterm | linux enterprise module for basesystem 15 sp3 | 330-11.3.1 | fixed |
| Suse | xterm | linux enterprise point of sale 11 sp3 | 238-3.3.1 | fixed |
| Suse | xterm | linux enterprise server 11 sp4-ltss | 238-3.3.1 | fixed |
| Ubuntu | xterm | 16.04 | 318-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 16.04 | 318-2ubuntu2 | vulnerable |
| Ubuntu | xterm | 16.04 | 322-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 16.04 | 322-1ubuntu1.2 | fixed |
| Ubuntu | xterm | 18.04 | 324-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu2 | vulnerable |
| Ubuntu | xterm | 18.04 | 330-1ubuntu2.2 | fixed |
| Ubuntu | xterm | 20.04 | 348-2ubuntu1 | vulnerable |
| Ubuntu | xterm | 20.04 | 353-1ubuntu1 | vulnerable |
| Ubuntu | xterm | 20.04 | 353-1ubuntu1.20.04.2 | fixed |
| Opensuse | xterm | leap 15.2 | 330-lp152.6.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | xterm | source | sid | 366-1 | not yet assigned | Not reported | [982439] |
| Debian | xterm | source | forky | 366-1 | not yet assigned | Not reported | [982439] |
| Debian | xterm | source | trixie | 366-1 | not yet assigned | Not reported | [982439] |
| Debian | xterm | source | bookworm | 366-1 | not yet assigned | Not reported | [982439] |
| Ubuntu | xterm | deb | 16.04 | 322-1ubuntu1.2 | Not reported | USN-4746-1 | Not reported |
| Ubuntu | xterm | deb | 18.04 | 330-1ubuntu2.2 | Not reported | USN-4746-1 | Not reported |
| Ubuntu | xterm | deb | 20.04 | 353-1ubuntu1.20.04.2 | Not reported | USN-4746-1 | Not reported |
| Suse | xterm | rpm | linux enterprise high performance computing 15-espos | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise high performance computing 15-ltss | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise high performance computing 15 sp1-espos | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise high performance computing 15 sp1-ltss | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 15-ltss | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 15 sp1-bcl | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 15 sp1-ltss | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server for sap applications 15 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server for sap applications 15 sp1 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | manager proxy 4.0 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | manager retail branch server 4.0 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | manager server 4.0 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | enterprise storage 6 | 330-4.3.1 | Not reported | SUSE-SU-2021:2013-1 | Not reported |
| Suse | xterm | rpm | hpe helion openstack 8 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | openstack cloud 8 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | openstack cloud 9 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | openstack cloud crowbar 8 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | openstack cloud crowbar 9 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server for sap applications 12 sp3 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server for sap applications 12 sp4 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 12 sp2-bcl | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 12 sp3-ltss | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 12 sp3-bcl | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 12 sp4-ltss | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 12 sp5 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server for sap applications 12 sp5 | 308-5.3.1 | Not reported | SUSE-SU-2021:2014-1 | Not reported |
| Opensuse | xterm | rpm | leap 15.3 | 330-11.3.1 | Not reported | OPENSUSE-SU-2021:2011-1 | Not reported |
| Suse | xterm | rpm | linux enterprise module for basesystem 15 sp2 | 330-11.3.1 | Not reported | SUSE-SU-2021:2011-1 | Not reported |
| Suse | xterm | rpm | linux enterprise module for basesystem 15 sp3 | 330-11.3.1 | Not reported | SUSE-SU-2021:2011-1 | Not reported |
| Suse | xterm | rpm | linux enterprise point of sale 11 sp3 | 238-3.3.1 | Not reported | SUSE-SU-2021:14747-1 | Not reported |
| Suse | xterm | rpm | linux enterprise server 11 sp4-ltss | 238-3.3.1 | Not reported | SUSE-SU-2021:14747-1 | Not reported |
| Ubuntu | xterm | deb | 16.04 | 322-1ubuntu1.2 | Not reported | UBUNTU-CVE-2021-27135 | Not reported |
| Ubuntu | xterm | deb | 18.04 | 330-1ubuntu2.2 | Not reported | UBUNTU-CVE-2021-27135 | Not reported |
| Ubuntu | xterm | deb | 20.04 | 353-1ubuntu1.20.04.2 | Not reported | UBUNTU-CVE-2021-27135 | Not reported |
| Opensuse | xterm | rpm | leap 15.2 | 330-lp152.6.3.1 | Not reported | OPENSUSE-SU-2021:0900-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [xterm]Fixed
Details (2)
379-1· amd64 · bookwormFixed · Fixed:
366-1dsa · xterm · debian · bookworm; dsa · xterm · debian · 12
379-1· arm64 · bookwormFixed · Fixed:
366-1dsa · xterm · debian · bookworm; dsa · xterm · debian · 12
[Debian 13 (Trixie)]
- [xterm]Fixed
Details (2)
398-1· amd64 · trixieFixed · Fixed:
366-1dsa · xterm · debian · 13
398-1· arm64 · trixieFixed · Fixed:
366-1dsa · xterm · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2021_0611.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-27135]
- [https://osv.dev/vulnerability/DLA-2558-1]
- [https://osv.dev/vulnerability/SUSE-SU-2021:14747-1]
- [https://osv.dev/vulnerability/SUSE-SU-2021:2011-1]
- [https://osv.dev/vulnerability/SUSE-SU-2021:2013-1]
- [https://osv.dev/vulnerability/SUSE-SU-2021:2014-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-27135]
- [https://osv.dev/vulnerability/USN-4746-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:0900-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:2011-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-27135]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-27135.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]