CVE-2026-76519

critical · 9.8Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

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.

Added 2026-10-14Remediation due 2026-10-17

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.

9.8

CVSS

2.2%

EPSS (exploit prob.)

82nd

EPSS percentile

2026-10-14

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-23

Affected products

Vendor	Product	Affected versions
cisco	asyncos	>= 15.0, < 15.5.5-014
cisco	asyncos	>= 16.0, < 16.5.0-780
cisco	secure_email_gateway_virtual_appliance_c100v	all versions
cisco	secure_email_gateway_virtual_appliance_c300v	all versions
cisco	secure_email_gateway_virtual_appliance_c600v	all versions
cisco	secure_email_gateway_c195	all versions
cisco	secure_email_gateway_c395	all versions
cisco	secure_email_gateway_c695	all versions

Check a specific version with /api/v1/cve/match.

References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-76519