Serial number: AV26-1042
Date: October 14, 2026
As of October 14, 2026, Cisco is affected by vulnerabilities in the following products:
- Cisco AsyncOS Software for Cisco Secure Email Gateway Release
- 15.5 version prior to 15.5.5-014
- 16.5 versions prior to 16.5.0-780
- Cisco Secure Email and Web Manager Release
- 15.5 version prior to 15.5.5-006
- 16.5 versions prior to 16.5.0-429
Cisco has indicated that CVE-2026-76519 is being exploited in the wild.
Update 1
On October 14, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-76519 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.