CVE-2023-40359
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected...
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
CVE-2023-40359- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
CVE List No score
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
CVE-2023-40359- Updated
- 2026-11-02
EUVDEUVD-2023-44930 No score
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
EUVD-2023-44930- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-cwvr-vg72-6p6j
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected...
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue.
- Record
GHSA-cwvr-vg72-6p6j- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVAZL-27957
CVE-2023-40359 affecting package xterm for versions less than 380-1
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
AZL-27957- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
CVE-2023-40359- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVDEBIAN-CVE-2023-40359
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
DEBIAN-CVE-2023-40359- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-40359
xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.
- Record
UBUNTU-CVE-2023-40359- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVopenSUSE-SU-2024:13240-1 No score
xterm-384-2.1 on GA media
These are all security issues fixed in the xterm-384-2.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:13240-1- Updated
- 2026-11-02
OSVSUSE-SU-2023:4438-1 No score
Security update for xterm
This update for xterm fixes the following issues:
- CVE-2023-40359: Fixed reporting characterset names in ReGiS graphics mode. (bsc#1214282)
- Record
SUSE-SU-2023:4438-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
xtermAzure Linux:2 |
before 380-1 | 380-1 |
xtermDebian:12 |
All versions, plus listed versions 379-1380-1381-1382-1382-2 Show 28 moreShow less383-1384-1385-1386-1387-1388-1389-1390-1391-1392-1393-1394-1395-1396-1397-1398-1399-1401-1402-1403-1404-1405-1406-1407-1409-1410-1411-1412-1 |
None known |
xtermDebian:13 |
before 382-2 | 382-2 |
xtermDebian:14 |
before 382-2 | 382-2 |
xtermSUSE:Linux Enterprise Module for Basesystem 15 SP4 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
xtermSUSE:Linux Enterprise Module for Basesystem 15 SP5 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
xtermSUSE:Manager Proxy 4.2 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
xtermSUSE:Manager Server 4.2 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
xtermopenSUSE:Leap 15.4 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
xtermopenSUSE:Leap 15.5 |
before 330-150200.11.12.1 | 330-150200.11.12.1 |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
xtermUbuntu:16.04:LTS |
All versions, plus listed versions 318-2ubuntu1318-2ubuntu2322-1ubuntu1322-1ubuntu1.2 |
None known |
xtermUbuntu:18.04:LTS |
All versions, plus listed versions 324-2ubuntu1330-1ubuntu1330-1ubuntu2330-1ubuntu2.2 |
None known |
xtermUbuntu:20.04:LTS |
All versions, plus listed versions 348-2ubuntu1353-1ubuntu1353-1ubuntu1.20.04.2 |
None known |
xtermUbuntu:22.04:LTS |
All versions, plus listed versions 366-1ubuntu1369-1ubuntu1370-1ubuntu1370-2ubuntu1371-1ubuntu1372-1ubuntu1 |
None known |
xtermopenSUSE:Tumbleweed |
before 384-2.1 | 384-2.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-40359 is a critical vulnerability (CVSS 9.8) in Invisible-island Xterm, published August 14, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.85%, the 58th percentile. Fixed in xterm 380-1.
References
invisible-island.net/xterm/xterm.log.html
nvd.nist.gov/vuln/detail/CVE-2023-40359
github.com/advisories/GHSA-cwvr-vg72-6p6j
security-tracker.debian.org/tracker/CVE-2023-40359
suse.com/support/update/announcement/2023/suse-su-20234438-1
bugzilla.suse.com/1214282
ubuntu.com/security/CVE-2023-40359
cve.org/CVERecord?id=CVE-2023-40359