Serial Number: AV26-921
Date: September 14, 2026
As of September 14, 2026, Cisco is affected by vulnerabilities in the following products:
- Cisco AsyncOS for Cisco Secure Email Gateway
- Prior to 15.5.5-014
- Prior to 16.0.4-302
- Prior to 16.5.0-780
- Cisco Secure Email Gateway
- Prior to 15.5.5-014
- Prior to 16.5.0-780
- Cisco Secure Email and Web Manager
- Prior to 15.5.5-006
- Prior to 16.5.0-429
On September 14, 2026, Cisco stated that CVE-2026-76461 is being actively exploited.
On September 14, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-76461 to their Known Exploited Vulnerabilities (KEV) Database.
The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.