CVE-2025-2022
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on Ashlar-Vellum Cobalt installations by tricking users into opening malicious VS files. Attackers can achieve remote code execution in the context of the current process. All users of affected Ashlar-Vellum Cobalt versions are at risk.
💻 Affected Systems
- Ashlar-Vellum Cobalt
📦 What is this software?
Cobalt by Ashlar
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via remote code execution, leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Malicious actors deliver malware payloads through phishing campaigns with malicious VS file attachments, compromising individual workstations.
If Mitigated
Limited impact with proper application sandboxing, file type restrictions, and user awareness training preventing successful exploitation.
🎯 Exploit Status
Requires user interaction (opening malicious file). Type confusion vulnerability in VS file parsing.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Ashlar-Vellum vendor advisory for specific patched version
Vendor Advisory: https://www.ashlar.com/security-advisories/ (check for CVE-2025-2022)
Restart Required: No
Instructions:
1. Check current Cobalt version. 2. Download latest patch from Ashlar-Vellum support portal. 3. Apply patch following vendor instructions. 4. Verify patch installation.
🔧 Temporary Workarounds
File Type Restriction
allBlock VS file extensions at email gateways and web proxies
Application Sandboxing
allRun Cobalt in restricted/sandboxed environment
🧯 If You Can't Patch
- Implement strict email filtering to block VS file attachments
- Educate users about risks of opening untrusted VS files and implement application whitelisting
🔍 How to Verify
Check if Vulnerable:
Check Cobalt version against vendor's vulnerable version listCheck Version:
Check Help > About in Cobalt application or consult vendor documentationVerify Fix Applied:
Verify installed version matches patched version from vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of cobalt.exe
- Unusual file parsing errors in application logs
Network Indicators:
- VS file downloads from untrusted sources
- Outbound connections from Cobalt to unknown IPs post-file-open
SIEM Query:
Process: cobalt.exe AND (EventID: 1000 OR ParentProcess: suspicious.exe)