CVE-2026-76461 Cisco Secure Email Gateway SQL Injection
Unauthenticated remote attackers can execute arbitrary commands with root privileges via crafted emails due to SQL injection in email parsing.
- Exploited in the wild
- Since 14 Sep 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76461?
CVE-2026-76461 is a critical SQL injection vulnerability in Cisco Asyncos, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-89
Which versions are affected by CVE-2026-76461?
It affects 1 product.
Products include Cisco Asyncos.
How do I fix CVE-2026-76461?
No fix has been published for CVE-2026-76461 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 17 Sep 2026.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-76461 being exploited?
Yes. Attackers have exploited CVE-2026-76461 in the wild since at least 14 Sep 2026.
Public exploit code: 4 proofs of concept on GitHub.
Other vulnerabilities in Cisco Asyncos
- CVE-2025-20393 Cisco Multiple Products Improper Input Validation
- CVE-2026-76519 Cisco Secure Email Gateway Relative Path Traversal
- CVE-2024-20435 Command injection in Cisco Secure Web Appliance
- CVE-2019-15956 Cisco Web Security Appliance Unauthorized Device Reset Vulnerability
- CVE-2021-34698 Cisco Web Security Appliance Proxy Service Denial of Service Vulnerability
Sources
Also known as GHSA-jwpf-jww6-h6vr.