Skip to content
Fencer Vulns
critical 9.8

CVE-2025-65085 json

Heap-based Buffer Overflow in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share

published 2025-11-25 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-199616

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 38%
public exploits
0
none known

Summary

A Heap-based Buffer Overflow vulnerability is present in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share versions 12.6.1204.216 and prior that could allow an attacker to disclose information or execute arbitrary code.

Vendor advisories

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

cisa ICSA-25-329-01 updated cvss 7.8

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

  • Ashlar-Vellum Argon <=12.6.1204.216 Ashlar-Vellum Cobalt <=12.6.1204.216 Ashlar-Vellum Cobalt Share <=12.6.1204.216 Ashlar-Vellum Lithium <=12.6.1204.216 Ashlar-Vellum Xenon <=12.6.1204.216
    affected: mitigation “Ashlar-Vellum recommends users update to build 12.6.1204.217 and later.”

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
11 mo ago

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 38% 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 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
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

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.