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Vulnerability record · CVE-2023-40359 · published 14 August 2023

CVE-2023-40359: Invisible-island xterm vulnerability

Invisible Island · Xterm

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.

9.8 CVSS 3.1 Critical EPSS 0.86% · top 43.3%
9.8CVSS 3.1 base score
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://invisible-island.net/xterm/xterm.log.html#xterm_380 Release Notes
https://invisible-island.net/xterm/xterm.log.html#xterm_380 Release Notes

Track CVE-2023-40359 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-45063Invisible-island xterm command injection vulnerabilityxterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may have Ctrl-g and therefore lead to command execution within …EPSS 5.4%9.8CVE-2021-27135Invisible-island xterm vulnerabilityxterm before Patch #366 allows remote attackers to execute arbitrary code or cause a denial of service (segmentation fault) via a crafted UTF-8 combi…EPSS 7.8%9.3CVE-2006-7236Invisible-island xterm vulnerabilityThe default configuration of xterm on Debian GNU/Linux sid and possibly Ubuntu enables the allowWindowOps resource, which allows user-assisted attack…EPSS 7.5%9.3CVE-2008-2383Invisible-island xterm code injection vulnerabilityCRLF injection vulnerability in xterm allows user-assisted attackers to execute arbitrary commands via LF (aka \n) characters surrounding a command n…EPSS 4.9%5.5CVE-2022-24130Invisible-island xterm classic buffer overflow vulnerabilityxterm through Patch 370, when Sixel support is enabled, allows attackers to trigger a buffer overflow in set_sixel in graphics_sixel.c via crafted te…EPSS 1.7%

Source: NIST National Vulnerability Database (record CVE-2023-40359), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.