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TI-2023-22472 Aliases CVE-2023-42104GHSA-h7vg-wchh-wv3q

Use after free in Ashlar-Vellum Cobalt

Priority LOW 37CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

Ashlar-Vellum Cobalt AR File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of AR files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-20630.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00638 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Ashlar-VellumCobaltAshlar-Vellum Cobalt 12 beta build 1204.62—No fix listedCNA
  • Cobalt VendorAshlar-Vellum Affected Ashlar-Vellum Cobalt 12 beta build 1204.62 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ashlar:cobalt:12.0.1204.61:*:*:*:*:*:*:*12.0.1204.61VulnerableAshlar-Vellum
  • cpe:2.3:a:ashlar:cobalt:12.0.1204.61:*:*:*:*:*:*:* Versions 12.0.1204.61 Vulnerable ·Ashlar-Vellum

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-42104
  2. 2026-10-03 Alias added: GHSA-h7vg-wchh-wv3q
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Advisory 1

  • TI-2023-17127 Out-of-bounds write in Ashlar-Vellum Cobalt CVSS 3.1HIGH 8.8
  • TI-2025-40238 Heap-based Buffer Overflow in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share CVSS 4.0HIGH 8.4
  • TI-2025-40241 Out-of-bounds read in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share CVSS 4.0HIGH 8.4
  • TI-2025-40240 Out-of-bounds read in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share CVSS 4.0HIGH 8.4
  • TI-2025-40239 Out-of-bounds write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share CVSS 4.0HIGH 8.4
  • TI-2025-40237 Out-of-bounds Write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share CVSS 4.0HIGH 8.4
See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences