Vulnerability · Published Nov 2, 2026 · Assigned by Mandiant
CVE-2026-111560OS Command Injection in Barracuda Appliances
High 8.6
In plain English
A high-severity OS command injection in Barracuda Email Security Gateway (ESG) from Barracuda Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
Improper neutralization of shell metacharacters in the timezone configuration field in certain Barracuda appliance products using common Barracuda code allows an authenticated administrator to inject OS commands that execute with root privileges when the crafted timezone value is subsequently processed.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Barracuda Networks | Barracuda Email Security Gateway (ESG) | 0 – through 9.4.0.27 |
| Barracuda Networks | Barracuda Load Balancer Application Delivery Controller (ADC) | 0 – through 6.4.0 |
| Barracuda Networks | Barracuda Web Application Firewall (WAF) | 0 – through 11.0.1 |
| Barracuda Networks | Barracuda Web Security Gateway (WSG) | 0 – through 16.1.100.100 |
| Barracuda Networks | Barracuda Message Archiver (BMA) | 0 – through 5.5.4.0 |
| Barracuda Networks | Barracuda WAF Control Center (WCC) | 0 – through 2.2.1 |
Weakness: CWE-78 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N