Disclosure summary
Cisco AsyncOS software for Cisco Secure Email Gateway (SEG) contains a SQL injection vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system.
CISA remediation guidance
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.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Rapid7 Blog · RSS-f0c642da2c6fcc3b11dc6c9e69ebdc50d13
Open original source · Updated Sep 15, 2026
CVE-2026-76461: Critical Cisco Secure Email Gateway Vulnerability Exploited in the Wild
CVE mention in publisher metadata; check the original affected versions.
Original records & references
PUBLISHED 2026-09-14T00:00:00-04:00
MODIFIED 2026-09-14T00:00:00-04:00
INGESTED 2026-10-06T11:42:57-04:00