CVE-2026-26334
📋 TL;DR
Calero VeraSMART versions before 2026 R1 contain hardcoded AES encryption keys in the Veramark.Framework.dll file. This allows attackers with local system access to decrypt service account credentials stored in app.settings, potentially leading to local privilege escalation. Organizations using affected VeraSMART versions are vulnerable.
💻 Affected Systems
- Calero VeraSMART
📦 What is this software?
Verasmart by Calero
Verasmart by Calero
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full control of Windows host using decrypted service account credentials, leading to complete system compromise and potential lateral movement.
Likely Case
Local attacker extracts credentials and gains elevated privileges on the host, enabling data theft, persistence, or further exploitation.
If Mitigated
Limited impact with proper access controls, but credentials remain exposed to local users.
🎯 Exploit Status
Requires local access and ability to extract keys from DLL and decrypt app.settings file.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2026 R1
Vendor Advisory: https://www.calero.com/
Restart Required: No
Instructions:
1. Upgrade VeraSMART to version 2026 R1 or later. 2. Verify Veramark.Framework.dll has been updated. 3. Consider rotating service account credentials.
🔧 Temporary Workarounds
Restrict local access to VeraSMART systems
allLimit local user access to systems running VeraSMART to reduce attack surface.
Secure app.settings file permissions
windowsSet strict file permissions on C:\VeraSMART Data\app.settings to prevent unauthorized access.
icacls "C:\VeraSMART Data\app.settings" /inheritance:r /grant:r "SYSTEM:(F)" /grant:r "Administrators:(F)"
🧯 If You Can't Patch
- Rotate service account credentials regularly to limit exposure window.
- Implement strict access controls and monitoring on VeraSMART hosts.
🔍 How to Verify
Check if Vulnerable:
Check VeraSMART version; if prior to 2026 R1, examine Veramark.Framework.dll for hardcoded AES keys using reverse engineering tools.Check Version:
Check VeraSMART application version in Control Panel > Programs or via vendor documentation.Verify Fix Applied:
Verify VeraSMART version is 2026 R1 or later and that app.settings encryption uses dynamic keys.📡 Detection & Monitoring
Log Indicators:
- Unusual access to C:\VeraSMART Data\app.settings file
- Suspicious process accessing Veramark.Framework.dll
Network Indicators:
- None - local exploitation only
SIEM Query:
EventID=4663 AND ObjectName LIKE '%VeraSMART Data%app.settings%' OR ProcessName LIKE '%reverse-engineering-tool%' AND TargetObject LIKE '%Veramark.Framework.dll%'