Cisco has finally patched a maximum-level security issue which was allegedly being targeted by Chinese hackers

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

Cisco finally patches seven-week-old zero-day flaw in Secure Email Gateway products

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

Cisco finally fixes AsyncOS zero-day exploited since November

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

Cisco Patches Vulnerability Exploited by Chinese Hackers

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

Cisco nixes hosted email: Where does email fit in the collaboration mix?

Cisco will sunset its Web email, which has been on the market since November 2009 for trial customers. The company plans to focus its collaboration efforts elsewhere. In a blog post, Cisco said it ...
The Hacker News

Cisco Patches Zero-Day RCE Exploited by China-Linked APT in Secure Email Gateways

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 ...