CVE-2025-65086 (GCVE-0-2025-65086)

Vulnerability from cvelistv5 – Published: 2026-05-12 20:22 – Updated: 2026-05-12 21:12
VLAI
Title
Out-of-bounds write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share
Summary
An Out-of-Bounds Write 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 execute arbitrary code when a specially crafted VC6 file is being parsed.
Severity
8.4 (High)
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
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 21:01 UTC
CWE
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 349 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Ashlar-Vellum Cobalt Affected: 0 , ≤ 12.6.1204.216 (custom)
guessed Create a notification for this product.
Ashlar-Vellum Xenon Affected: 0 , ≤ 12.6.1204.216 (custom)
guessed Create a notification for this product.
Ashlar-Vellum Argon Affected: 0 , ≤ 12.6.1204.216 (custom)
guessed Create a notification for this product.
Ashlar-Vellum Lithium Affected: 0 , ≤ 12.6.1204.216 (custom)
guessed Create a notification for this product.
Ashlar-Vellum Cobalt Share Affected: 0 , ≤ 12.6.1204.216 (custom)
guessed Create a notification for this product.
Date Public
2026-05-12 20:21
Credits
Michael Heinzl reported these vulnerabilities to CISA.
Show details on NVD website
To clipboard 

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              "value": "Ashlar-Vellum recommends users update to build 12.6.1204.217 and later."
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "Out-of-bounds write in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, Cobalt Share",
          "x_generator": {
            "engine": "Vulnogram 0.5.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "assignerShortName": "icscert",
        "cveId": "CVE-2025-65086",
        "datePublished": "2026-05-12T20:22:42.842Z",
        "dateReserved": "2025-11-17T16:43:44.054Z",
        "dateUpdated": "2026-05-12T21:12:42.853Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.