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Fencer Vulns
high 7.8

CVE-2023-39943 json

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

published 2025-02-04 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-43641

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

In Ashlar-Vellum Cobalt versions prior to v12 SP2 Build (1204.200), the affected application lacks 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.

Patch / fix

  • Ashlar-Vellum Cobalt v12 SP2 Build (1204.200)
  • Ashlar-Vellum Cobalt Share v12 SP2 Build (1204.200)
  • Ashlar-Vellum Xenon v12 SP2 Build (1204.200)
  • Ashlar-Vellum Argon v12 SP2 Build (1204.200)
  • Ashlar-Vellum Lithium v12 SP2 Build (1204.200)

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-299-03 updated cvss 7.8

Ashlar-Vellum Cobalt, Graphite, Xenon, Argon, Lithium (Update A)

  • Ashlar-Vellum Argon <v12_SP2_Build_1204.200 Ashlar-Vellum Cobalt <v12_SP2_Build_1204.200
    affected: vendor fix, mitigation “Ashlar-Vellum recommends users apply the following mitigations to help reduce risk:” download.ashlar.com
  • Ashlar-Vellum Cobalt Share <v12_SP2_Build_1204.200
    affected: mitigation “Ashlar-Vellum recommends users apply the following mitigations to help reduce risk:”
  • Ashlar-Vellum Graphite <=v13.0.48
    affected: vendor fix, mitigation “Ashlar-Vellum recommends users apply the following mitigations to help reduce risk:” download.ashlar.com
  • Ashlar-Vellum Lithium <v12_SP2_Build_1204.200 Ashlar-Vellum Xenon <v12_SP2_Build_1204.200
    affected: vendor fix, mitigation “Ashlar-Vellum recommends users apply the following mitigations to help reduce risk:” download.ashlar.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
21 mo ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 4.0 8.4 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Ashlar-Vellum Cobalt
  • Ashlar-Vellum Cobalt Share
  • Ashlar-Vellum Xenon
  • Ashlar-Vellum Argon
  • Ashlar-Vellum Lithium

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.