{"id":"CVE-2026-76519","published":"2026-10-14T17:19:10.747","lastModified":"2026-10-15T13:47:19.470","description":"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.\r\n\r\nThis 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.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-23"],"vendors":["cisco"],"products":["asyncos","secure email gateway virtual appliance c100v","secure email gateway virtual appliance c300v","secure email gateway virtual appliance c600v","secure email gateway c195","secure email gateway c395","secure email gateway c695"],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76519","tags":["US Government Resource"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"Cisco Secure Email Gateway's AMP feature has a flaw where unauthenticated attackers can write arbitrary files to the OS and execute commands as root, due to improper handling of email attachments with file reputation service enabled.","exploitability":"Exploitation is straightforward requiring only sending a crafted email attachment through the affected device, with no authentication or user interaction needed.","blast_radius":"The vulnerability could impact organizations using Cisco Secure Email Gateway with AMP enabled, potentially allowing full system compromise and privilege escalation to root access.","remediation":"Disable the Advanced Malware Protection (AMP) feature immediately until a patch is available, as no fixed version is published in the description.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","email","file-write","privilege-escalation"],"model":"garnet-coder","analyzedAt":"2026-10-15T08:52:05.629Z"}}