CVE-2026-76519
Cisco Secure Email Gateway Arbitrary File Write Vulnerability
KEVCRITICAL 9.8EPSS 1.6%
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.
- Affected
- Cisco · Cisco Secure Email
- CVSS v3.1 CISCO
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 1.57% chance of exploitation in the next 30 days, 75th percentile
- CISA KEV
- added 2026-10-14
- Published
- 2026-10-14
- Updated
- 2026-10-15
Proof-of-concept exploits (2)
- Mickysalivan/CVE-2026-76519-POC0★ · 2026-10-14
- Mickysalivan/CVE-2026-76519-Proof-of-concept0★ · 2026-10-14