Ashlar-Vellum Cobalt/Xenon/Argon/Lithium/Cobalt Share up to 12.6.1204.216 out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium and Cobalt Share up to 12.6.1204.216. It has been rated as critical. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in out-of-bounds write. This vulnerability was named CVE-2025-65086. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Ashlar-Vellum Cobalt, Xenon, Argon, Lithium and Cobalt Share up to 12.6.1204.216. It has been classified as critical. This affects an unknown function. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented by Michael Heinzl as icsa-25-329-01. It is possible to read the advisory at cisa.gov. This vulnerability is uniquely identified as CVE-2025-65086 since 11/17/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/12/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/17/2025 CVE reserved
05/12/2026 +175 days Advisory disclosed
05/12/2026 +0 days VulDB entry created
05/12/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: icsa-25-329-01
Researcher: Michael Heinzl
Status: Not defined

CVE: CVE-2025-65086 (🔒)
GCVE (CVE): GCVE-0-2025-65086
GCVE (VulDB): GCVE-100-363363

Entryinfo

Created: 05/12/2026 23:10
Changes: 05/12/2026 23:10 (66)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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