CVEs / CVE-2026-111560
CVE-2026-111560: Barracuda Networks Multiple Products OS Command Injection Vulnerability
- Known exploited in the CISA KEV catalog since 10 Nov 2026
- high 8.6 CVSS 4.0 (from the CNA)
- EPSS 6.19% chance of exploitation in the next 30 days, higher than 93% of CVEs (11 Nov 2026)
- Last changed at its sources
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Summary
Barracuda Networks Email Security Gateway (ESG), Load Balancer, Application Delivery Controller (ADC), Message Archiver (BMA), WAF Control Center (WCC), Web Application Firewall (WAF), and Web Security Gateway (WSG) contain an OS command injection vulnerability. This vulnerability could allow an authenticated administrator to inject OS commands that execute with root privileges when the crafted timezone value is subsequently processed. This vulnerability can be chained with CVE-2026-116606
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 and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Barracuda Networks Barracuda Email Security Gateway (ESG) | up to and including 9.4.0.27 | — |
| Barracuda Networks Barracuda Load Balancer Application Delivery Controller (ADC) | up to and including 6.4.0 | — |
| Barracuda Networks Barracuda Web Application Firewall (WAF) | up to and including 11.0.1 | — |
| Barracuda Networks Barracuda Web Security Gateway (WSG) | up to and including 16.1.100.100 | — |
| Barracuda Networks Barracuda Message Archiver (BMA) | up to and including 5.5.4.0 | — |
| Barracuda Networks Barracuda WAF Control Center (WCC) | up to and including 2.2.1 | — |
Exploitation
| In CISA KEV since | 10 Nov 2026 |
|---|---|
| Due date for US federal agencies | 13 Nov 2026 |
| Used in ransomware campaigns | Unknown |
| 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. |
Severity
| CVSS 4.0 | 8.6 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:XScored by the CNA ([email protected]) |
|---|---|
| Weakness | CWE-78 |
On the Stackurity blog
References
- CVE-2026-111560 on NVD
- CVE-2026-111560 in the CISA KEV catalog
- https://trust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection (cited by CISA)
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (cited by CISA)
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (cited by CISA)
- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md
- https://trust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-111560
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.