CVE-2026-76519 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 14, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-76519 | CISA-ADP | US Government Resource |
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-afw-zqYJkjxp | [email protected] | Vendor Advisory |
This CVE is in CISA's Known Exploited Vulnerabilities Catalog
Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.
| Vulnerability Name | Date Added | Due Date | Required Action |
|---|---|---|---|
| Cisco Secure Email Gateway Relative Path Traversal Vulnerability | Oct 14, 2026 | 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. |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-23 | Relative Path Traversal | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cisco asyncos | >= 15.0, < 15.5.5-014 >= 16.0, < 16.5.0-780 |
CPE
Remediation
| |
| cisco secure email gateway virtual appliance c100v | All versions |
CPE
Remediation
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| cisco secure email gateway virtual appliance c300v | All versions |
CPE
Remediation
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| cisco secure email gateway virtual appliance c600v | All versions |
CPE
Remediation
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| cisco secure email gateway c195 | All versions |
CPE
Remediation
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| cisco secure email gateway c395 | All versions |
CPE
Remediation
| |
| cisco secure email gateway c695 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 15, 2026 | Initial Analysis | [email protected] |
| Oct 15, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | CVE CISA KEV Update | Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government |
| Oct 14, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | New CVE Received | [email protected] |