Chinese Hackers Exploit Cisco's AsyncOS Zero-Day Vulnerability

Chinese Hackers Exploit Cisco's AsyncOS Zero-Day Vulnerability

First seen 18 Dec 2025, 15:57 UTC •BankinfosecurityItproTechradarInews.Zoombangla •82% similarity •61.1

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Cisco has reported that Chinese hackers are exploiting a zero-day vulnerability in its AsyncOS software, which allows unauthorized root access to Secure Email appliances. The flaw affects Cisco's Secure Email Gateway and Secure Email and Web Manager appliances, putting numerous customers at risk due to the unpatched nature of the vulnerability.

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Cisco AsyncOS Cisco AsyncOS Cisco ISE Secure Email And Web Manager Secure Email Gateway Zero-day Exploit