---
id: CVE-2025-7984
title: >-
  Ashlar-Vellum Cobalt AR File Parsing Uninitialized Variable Remote Code
  Execution Vulnerability
summary: >-
  Ashlar-Vellum Cobalt AR File Parsing Uninitialized Variable Remote Code
  Execution Vulnerability. This vulnerability allows remote attackers to execute
  arbitrary code on affected installations of Ashlar-Vellum Cobalt. User
  interaction is …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-457
vendor: ashlar
product: cobalt
affected:
  - cobalt = 12.2.1204.96
published: '2025-09-17'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T00:10:00.127'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-7984'
references:
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-25-636/'
    label: zdi-disclosures@trendmicro.com
tags:
  - nvd
epss: 0.00218
epssPercentile: 0.10866
zeroDay: true
ingestedAt: '2026-09-26T00:22:39.938Z'
---

## Overview

Ashlar-Vellum Cobalt AR File Parsing Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of AR files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25700.

## Affected

- `cobalt = 12.2.1204.96`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.