Research · Sep 14, 2026 · ZeroDay Catalog
Critical SQL Injection Vulnerability in Cisco Secure Email Gateway
A critical SQL injection vulnerability in Cisco Secure Email Gateway could allow remote attackers to execute arbitrary commands with root privileges, necessitating immediate attention from security teams.
What changed
A newly identified vulnerability in the email parsing logic of Cisco AsyncOS Software for Cisco Secure Email Gateway has been disclosed. This flaw allows unauthenticated remote attackers to execute arbitrary commands with root privileges on the underlying operating system.
The vulnerability arises from insufficient validation in the email parsing process, enabling attackers to exploit it by sending specially crafted email messages containing malicious SQL statements.
Who is affected
Organizations utilizing Cisco Secure Email Gateway are at risk due to this vulnerability. The impact is particularly significant for those who rely on this software for email security.
The following groups are specifically affected:
- Cisco Secure Email Gateway users
- Organizations using Cisco AsyncOS Software
- IT departments responsible for email security management
- Businesses relying on email communications for critical operations
What to do
Immediate action is recommended to mitigate the risks associated with this vulnerability. Security teams should prioritize the implementation of updates and patches provided by Cisco.
In addition, organizations should review their email security configurations and monitor for any unusual activity that may indicate exploitation attempts.
- Apply security patches from Cisco as soon as they are available.
- Review and enhance email filtering and security measures.
- Monitor system logs for suspicious email activities.
- Educate staff about potential phishing attempts that could exploit this vulnerability.