【Vulnerability Alert】Cisco Secure Email Gateway Has a Critical Security Vulnerability (CVE-2026-76519)

publish date : 2026-10-22 update date : 2026-10-22

Source: Ministry of education information & communication security contingency platform


Publication Number	TACERT-ANA-2026101503104646	Publication Time	2026-10-15 15:47:48
Incident Type	ANA-Vulnerability Alert	Discovery Time	2026-10-15 15:47:48
Impact Level	Low
[Subject] 【Vulnerability Alert】Cisco Secure Email Gateway Has a Critical Security Vulnerability (CVE-2026-76519)
[Content] Forwarded from TWCERTCC-200-202610-00000023 Cisco has issued an advisory regarding a critical security vulnerability in Cisco Secure Email Gateway (CVE-2026-76519, CVSS: 9.8). This vulnerability exists in Advanced Malware Protection (AMP) and may allow an unauthenticated remote attacker to write arbitrary files to the underlying operating system. Information Sharing Level: WHITE (Information content can be publicly disclosed)
[Affected Platform] Cisco AsyncOS Software for Cisco Secure Email Gateway version 15.5, Cisco AsyncOS Software for Cisco Secure Email Gateway version 160, Cisco AsyncOS Software for Cisco Secure Email Gateway version 16.5
[Recommended Actions] Please update to the following versions: Cisco AsyncOS Software for Cisco Secure Email Gateway version 15.5.5-014, Cisco AsyncOS Software for Cisco Secure Email Gateway version 16.5.0-780
[Reference] 1. https://www.twcert.org.tw/tw/cp-169-11288-17ac8-1.html

(This notification is for informational purposes only and does not constitute a cybersecurity incident).
If you have questions or suggestions regarding this notification, please feel free to contact us.
Ministry of education information & communication security contingency platform
Website: https://info.cert.tanet.edu.tw/
Phone: +886-7-5250211
Internet Phone: 98400000
E-Mail: service@cert.tanet.edu.tw

Organizer: Computer Center

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