Chinese hackers are behind attacks on AsyncOS Software that allow complete takeover of the appliance, company says.

At least one of these groups allegedly targeted Cisco Secure Email Gateway, and Cisco Secure Email and Web Manager instances ...

Cisco finally patched a maximum-severity AsyncOS zero-day exploited in attacks targeting Secure Email Gateway (SEG) ...

This is a threat to security - and to the weekend for some unlucky netadmins Cisco finally delivered a fix for a ...

Cisco patched an Email Gateway and Secure Email zero-day exploited by Chinese hackers to deploy the AquaShell backdoor.

Attackers compromise Cisco Secure Email Gateway and Secure Email and Web Manager via a root vulnerability. Security updates are now available.

Cisco released fixes for CVE-2025-20393, a CVSS 10.0 zero-day RCE flaw in AsyncOS exploited by a China-linked APT via email ...

Cisco has patched a critical AsyncOS zero-day flaw exploited since November, linked to a suspected Chinese APT group ...

Cisco notified customers this week to patch a critical vulnerability that could allow attackers to bypass authentication and login into the web management interface of Cisco email gateway appliances ...