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No exploitation reportedFix available

CVE-2023-40359

No exploitation reported by the sources we read.

  • Published2023-08-14
  • Fixed in380

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2023-08-1417:15CVE publishedNVD

Versions per branch

NVD
Invisible-island xterm
BranchAffectedFixed in
380.x< 380380

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • xtermUbuntu:22.04:LTSall versions · no fixed version listed
  • xtermUbuntu:20.04:LTSall versions · no fixed version listed
  • xtermUbuntu:18.04:LTSall versions · no fixed version listed
  • xtermUbuntu:16.04:LTSall versions · no fixed version listed
  • xtermSUSE:Manager Server 4.2all versions · fixed in 330-150200.11.12.1
  • xtermSUSE:Manager Proxy 4.2all versions · fixed in 330-150200.11.12.1
  • xtermSUSE:Linux Enterprise Module for Basesystem 15 SP5all versions · fixed in 330-150200.11.12.1
  • xtermSUSE:Linux Enterprise Module for Basesystem 15 SP4all versions · fixed in 330-150200.11.12.1

7 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update Invisible-island xterm to 380

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2023-08-14
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-cwvr-vg72-6p6j

Frequently asked questions

What is 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.

Is CVE-2023-40359 actively exploited?

Active exploitation of CVE-2023-40359 has not been confirmed. Its EPSS score was 0.9% on 2026-11-04, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-40359?

CVE-2023-40359 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record