xterm before 380 supports ReGIS reporting for character-set names even if they have…
Priority MEDIUM 50Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00855 58th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:* | before 380 | Vulnerable | Invisible-island |
- cpe:2.3:a:invisible-island:xterm:*:*:*:*:*:*:*:* Versions before 380 Vulnerable ·Invisible-island
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2023-40359
- 2026-10-03 Alias added: GHSA-cwvr-vg72-6p6j
References
More Invisible-island Xterm vulnerabilities
- TI-2022-22154 xterm before 375 allows code execution via font ops, e.g., because an OSC 50 response may… CVSS 3.1CRITICAL 9.8
- TI-2021-08683 xterm before Patch #366 allows remote attackers to execute arbitrary code or cause a… CVSS 3.1CRITICAL 9.8
- TI-2006-06976 The default configuration of xterm on Debian GNU/Linux sid and possibly Ubuntu enables… CVSS 2.0HIGH 9.3
- TI-2008-02286 CRLF injection vulnerability in xterm allows user-assisted attackers to execute arbitrary… CVSS 2.0HIGH 9.3
- TI-2022-08075 xterm through Patch 370, when Sixel support is enabled, allows attackers to trigger a… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2023-40359 · CVE Program
- CVE-2023-40359 · NVD
- FIRST EPSS
- GHSA-cwvr-vg72-6p6j · GitHub Advisory Database · CC BY 4.0
- CVE-2023-40359 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences