CVE-2026-76461

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 2026-09-14Remediation due 2026-09-17

A vulnerability in the email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system. This vulnerability is due to insufficient validation in the email parsing logic. An attacker could exploit this vulnerability by sending a crafted email message that contains malicious SQL statements through an affected device. A successful exploit could allow the attacker to execute arbitrary SQL statements, leading to command execution with root privileges on the underlying operating system.

9.8

CVSS

29.5%

EPSS (exploit prob.)

98th

EPSS percentile

2026-09-14

Published

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

Weaknesses

CWE-89

Affected products

Vendor	Product	Affected versions
cisco	asyncos	< 15.5.5-014
cisco	asyncos	>= 16.0, < 16.0.4-302
cisco	asyncos	>= 16.5, < 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-2026-76461