CVE-2026-76519Cisco Secure Email Gateway Arbitrary File Write Vulnerability
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.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1cisco (CNA) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Oct 17, 2026
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Details
- CVE ID
- CVE-2026-76519
- Status
- Analyzed
- Assigner (CNA)
- cisco
- Published
- Oct 14, 2026
- Last modified
- 2026-10-15 13:47 UTC
- Weaknesses
- CWE-23 · Relative Path Traversal
Affected Products
As published by the CNA in the CVE record.
CiscoCisco Secure Email23 version ranges
- 14.0.0-698
- 13.5.1-277
- 13.0.0-392
- 14.2.0-620
- 13.0.5-007
- 13.5.4-038
- 14.2.1-020
- 14.3.0-032
- 15.0.0-104
- 15.0.1-030
- 15.5.0-048
- 15.5.1-055
- 15.5.2-018
- 16.0.0-050
- 15.0.3-002
- 16.0.0-054
- 15.5.3-022
- 16.0.1-017
- 15.5.4-012
- 16.0.4-016
- 15.0.5-016
- 16.0.2-112
- 16.0.3-044