Serial number: AV25-866
Date: December 30, 2025
Updated: January 27, 2026
On October 9, 2025, SmarterTools published a security update to address a critical vulnerability in the following product:
- SmarterMail – version Build 9406 and prior
Users and administrators of affected product versions are advised to update immediately to SmarterMail version Build 9413 or greater.
Update 1
On January 26, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2025-52691 to their Known Exploited Vulnerabilities (KEV) Database.
The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary update.