CVE-2025-2015

Code execution via VS file type confusion

Published Mar 11, 2025 · Updated Mar 12, 2025

Type confusion in Ashlar-Vellum Cobalt 1204.91 allows remote attackers to execute code by opening a crafted VS file. The VS file parser fails to validate user-supplied data before accessing it as an incompatible type, causing type confusion in the current process. Exploitation requires the target to visit malicious content or open a malicious file, and resulting code runs with the application's privileges.

CVSS severity7.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Ashlar-Vellum Cobalt 1204.91 allows remote attackers to execute code by opening a crafted VS file. The VS file parser fails to validate user-supplied data before accessing it as an incompatible type, causing type confusion in the current process. Exploitation requires the target to visit malicious content or open a malicious file, and resulting code runs with the application's privileges.

The record

CVE
CVE-2025-2015
Published
Mar 11, 2025
Updated
Mar 12, 2025
Vendor
Ashlar-Vellum
Product
Cobalt
Classifications
CWE-843, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1204.91

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ashlar-Vellum · Cobaltversion=1204.91

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1203Exploitation for Client Execution
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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