Actively exploited in the wild
Cisco Secure Email Gateway SQL Injection Vulnerability
Cisco - Secure Email Gateway · Listed in the CISA KEV since 2026-09-14. This indicates confirmed attacks in production environments.
Required action: 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.
CVE-2026-76461
CriticalCVSS 9.8KEVExploitation Probability (EPSS)
High risk81th percentile - higher than 81% of all known CVEs
Summary
A vulnerability in the email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway is due to insufficient validation in the parsing logic. An unauthenticated remote attacker could send a crafted email containing malicious SQL statements, potentially leading to execution of arbitrary SQL statements and command execution with root privileges on the underlying operating system.
Risk Assessment
Remote command execution with root privileges is possible, risking full device compromise and breach of confidentiality and integrity of processed data.
Recommendation
Install Cisco security updates for Cisco Secure Email Gateway as soon as possible and consider restricting access to mail interfaces.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS