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TI-2023-20565 Aliases CVE-2023-39427GHSA-xxcp-3qr6-x6g4

Ashlar-Vellum Cobalt, Xenon, Argon, Lithium Out-of-bounds Write

Priority LOW 35CWE-787Published · 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 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share v12 SP0 Build (1204.77), the affected applications lack proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00227 13th percentileScored 2026-11-08
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-VellumCobaltv12 SP0 Build (1204.77)—No fix listedCNA
Ashlar-VellumXenonv12 SP0 Build (1204.77)—No fix listedCNA
Ashlar-VellumArgonv12 SP0 Build (1204.77)—No fix listedCNA
Ashlar-VellumLithiumv12 SP0 Build (1204.77)—No fix listedCNA
Ashlar-VellumCobalt Sharev12 SP0 Build (1204.77)—No fix listedCNA
  • Cobalt VendorAshlar-Vellum Affected v12 SP0 Build (1204.77) Fixed in — No fix listed CNA
  • Xenon VendorAshlar-Vellum Affected v12 SP0 Build (1204.77) Fixed in — No fix listed CNA
  • Argon VendorAshlar-Vellum Affected v12 SP0 Build (1204.77) Fixed in — No fix listed CNA
  • Lithium VendorAshlar-Vellum Affected v12 SP0 Build (1204.77) Fixed in — No fix listed CNA
  • Cobalt Share VendorAshlar-Vellum Affected v12 SP0 Build (1204.77) Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:*before 12.4.1204.200VulnerableAshlar-Vellum
cpe:2.3:a:ashlar:graphite:*:*:*:*:*:*:*:*up to 13.0.48VulnerableAshlar-Vellum
cpe:2.3:a:ashlar:xenon:*:*:*:*:*:*:*:*before 12.4.1204.200VulnerableAshlar-Vellum
cpe:2.3:a:ashlar:argon:*:*:*:*:*:*:*:*before 12.4.1204.200VulnerableAshlar-Vellum
cpe:2.3:a:ashlar:lithium:*:*:*:*:*:*:*:*before 12.4.1204.200VulnerableAshlar-Vellum
  • cpe:2.3:a:ashlar:cobalt:*:*:*:*:*:*:*:* Versions before 12.4.1204.200 Vulnerable ·Ashlar-Vellum
  • cpe:2.3:a:ashlar:graphite:*:*:*:*:*:*:*:* Versions up to 13.0.48 Vulnerable ·Ashlar-Vellum
  • cpe:2.3:a:ashlar:xenon:*:*:*:*:*:*:*:* Versions before 12.4.1204.200 Vulnerable ·Ashlar-Vellum
  • cpe:2.3:a:ashlar:argon:*:*:*:*:*:*:*:* Versions before 12.4.1204.200 Vulnerable ·Ashlar-Vellum
  • cpe:2.3:a:ashlar:lithium:*:*:*:*:*:*:*:* Versions before 12.4.1204.200 Vulnerable ·Ashlar-Vellum

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-39427
  2. 2026-10-03 Alias added: GHSA-xxcp-3qr6-x6g4

References

Advisory 1

  • TI-2023-23944 Uncontrolled search path in Ashlar-Vellum Argon 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 10 →

Sources

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