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

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

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

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

Suspected Chinese-government-linked threat actors have been battering a maximum-severity Cisco AsyncOS zero-day vulnerability in some Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) ...

Cisco fixed serious vulnerabilities this week in its email and content security management products that could have let an attacker execute code with privileges of the root user. Cisco fixed serious ...

Cisco warned customers today of an unpatched, maximum-severity Cisco AsyncOS zero-day actively exploited in attacks targeting Secure Email Gateway (SEG) and Secure Email and Web Manager (SEWM) ...