CVE-2026-76519
CriticalCVSS 9.8Summary
A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. It is due to improper handling of email attachments when the file reputation service is enabled; an attacker could send an email with a crafted attachment through an affected device, potentially allowing arbitrary file writes and command execution with root privileges.
Risk Assessment
The vulnerability may allow an unauthenticated remote attacker to write arbitrary files and execute commands with root privileges on the device's operating system. This poses a critical risk of full compromise of the email gateway.
Recommendation
Apply the patches provided by Cisco for Cisco Secure Email Gateway. Until patched, consider disabling the file reputation service or limiting email attachment processing where possible.
Other vulnerabilities in Cisco Secure Email Gateway
Original NVD description (English source)
A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email attachments when the file reputation service is enabled. An attacker could exploit this vulnerability by sending an email that contains a crafted attachment through an affected device. A successful exploit could allow the attacker to write arbitrary files and execute commands with root privileges on the underlying operating system.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS