— Unscored

Cisco Secure Email Gateway SQL Injection Vulnerability

CVE-2026-76461 Exploited

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.

Being exploited in the wild

Catalogued 14 September 2026 · US federal remediation deadline 17 September 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…

Exploit code is also public: Public PoC

Public PoC0xBlackash/CVE-2026-764612 stars
Public PoCS3v3n-JG/CVE-2026-764611 stars
Public PoCHORKimhab/CVE-2026-76461
Public PoCfevar54/CVE-2026-76461-Detection-Kit-

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Yes — listed in the CISA KEV catalog
Exploit availability: CISA KEV, Public PoC
Published: 14 September 2026
Last updated: 14 September 2026
Affected: Cisco · Secure Email Gateway
Weakness: CWE-89

At the source

CISA KEV

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

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