9.8

CVE-2023-40359: invisible-island xterm

Modified
AliasesSUSE-SU-2023:4438-1UBUNTU-CVE-2023-40359DEBIAN-CVE-2023-40359
Published 14-08-2023Last modified 09-10-2024

Vulnerability summary

CVE-2023-40359 is a critical (CVSS 9.8) vulnerability in invisible-island xterm. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 58.4% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.85%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 14-08-2023
    PublishedVulnerability first disclosed.
  2. 09-10-2024
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.85%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.85% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse4 products
  • xterm&distro=SUSE Linux Enterprise Module for Basesystem 15 SP4< 330-150200.11.12.1
  • xterm&distro=SUSE Linux Enterprise Module for Basesystem 15 SP5< 330-150200.11.12.1
  • xterm&distro=SUSE Manager Proxy 4.2< 330-150200.11.12.1
  • xterm&distro=SUSE Manager Server 4.2< 330-150200.11.12.1
Opensuse3 products
  • xterm&distro=openSUSE Leap 15.4< 330-150200.11.12.1
  • xterm&distro=openSUSE Leap 15.5< 330-150200.11.12.1
  • xterm&distro=openSUSE Tumbleweed< 384-2.1
Debian1 product
  • xtermAll versions (No fix recorded) | < 382-2
Invisible-island1 product
Ubuntu1 product
  • xtermAll versions (No fix recorded)

5 vendors · 10 products

References

8 links