HIGH · CVSS 8.6
ACTIVELY EXPLOITED
CVE-2026-111560: Barracuda Networks Multiple Products OS Command Injection Vulnerability
| Vendor | Barracuda Networks |
|---|---|
| Product | Multiple Products |
| CVSS score | 8.6 · CVSS 4.0 · HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| EPSS | 1.1% (percentile 65) |
| Actively exploited | Yes, according to CISA KEV |
| Added to CISA KEV | 10 Nov 2026 |
| CISA federal deadline | 13 Nov 2026 |
| Weakness (CWE) | CWE-78 |
| NVD published | 2 Nov 2026 |
| NVD last modified | 11 Nov 2026 |
| NVD status | Undergoing Analysis |
Affected versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Barracuda Networks Barracuda Email Security Gateway (ESG) | up to 9.4.0.27 | – |
| Barracuda Networks Barracuda Load Balancer Application Delivery Controller (ADC) | up to 6.4.0 | – |
| Barracuda Networks Barracuda Message Archiver (BMA) | up to 5.5.4.0 | – |
| Barracuda Networks Barracuda WAF Control Center (WCC) | up to 2.2.1 | – |
| Barracuda Networks Barracuda Web Application Firewall (WAF) | up to 11.0.1 | – |
| Barracuda Networks Barracuda Web Security Gateway (WSG) | up to 16.1.100.100 | – |
Required action (CISA's text)
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.
Description (NVD)
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.
Vendor advisories
SOURCES
Other Barracuda Networks flaws
- CVE-2026-116606: Barracuda Networks Email Security Gateway (ESG) Authentication Bypass Using an Alternate Path or Channel Vulnerability
- CVE-2023-2868: Barracuda Networks ESG Appliance Improper Input Validation Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 11 Nov 2026.