cisco-sa-esa-afw-zqYJkjxpCriticalCVSS 9.8

Cisco Secure Email Gateway Arbitrary File Write Vulnerability

Published
October 14, 2026
Last Modified
October 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-76519 →

📋 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.

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.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

For further documentation of improvements and fixes in Cisco Secure Email Gateway, see Cisco Secure Email Gateway and Secure Email and Web Manager Security Hardening Release: September 2026 ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-esa-dfCrfXkm"].

CVE-2026-76519 — Cisco Secure Email Gateway Arbitrary File Write Vulnerability (CVSS 3.1 9.8, CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

🎯 Affected products24

  • Cisco Secure Email
  • Cisco Secure Email 13.0.0-392
  • Cisco Secure Email 13.0.5-007
  • Cisco Secure Email 13.5.1-277
  • Cisco Secure Email 13.5.4-038
  • Cisco Secure Email 14.0.0-698
  • Cisco Secure Email 14.2.0-620
  • Cisco Secure Email 14.2.1-020
  • Cisco Secure Email 14.3.0-032
  • Cisco Secure Email 15.0.0-104
  • Cisco Secure Email 15.0.1-030
  • Cisco Secure Email 15.0.3-002
  • Cisco Secure Email 15.0.5-016
  • Cisco Secure Email 15.5.0-048
  • Cisco Secure Email 15.5.1-055
  • Cisco Secure Email 15.5.2-018
  • Cisco Secure Email 15.5.3-022
  • Cisco Secure Email 15.5.4-012
  • Cisco Secure Email 16.0.0-050
  • Cisco Secure Email 16.0.0-054
  • Cisco Secure Email 16.0.1-017
  • Cisco Secure Email 16.0.2-112
  • Cisco Secure Email 16.0.3-044
  • Cisco Secure Email 16.0.4-016

✅ Remediation

Cisco has released software updates that address this vulnerability. https://software.cisco.com Workarounds: There are no workarounds that address this vulnerability.

🔗 References (12)