CVE-2026-111560Barracuda Email Security Gateway (ESG) OS Command Injection
OS Command Injection in Barracuda Appliances
Published Nov 2, 2026 · Updated Nov 3, 2026 · Also known as EUVD-2026-115148, GHSA-fq98-vw8w-5vf9
Key Facts
Patch in the next maintenance window- CVE-2026-111560 is a high-severity vulnerability (CVSS 8.6 v4) affecting Barracuda Email Security Gateway (ESG), Barracuda Load Balancer Application Delivery Controller (ADC), Barracuda Message Archiver (BMA) and 3 more products.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 1.1% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
Scores
CVSS v4
8.6
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
EPSS (30-day exploit likelihood)
1.1%
Higher than 64.7% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
40/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
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
12 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Barracuda Email Security Gateway (ESG) | See advisory | n/a |
| Barracuda Load Balancer Application Delivery Controller (ADC) | See advisory | n/a |
| Barracuda Message Archiver (BMA) | See advisory | n/a |
| Barracuda WAF Control Center (WCC) | See advisory | n/a |
| Barracuda Web Application Firewall (WAF) | See advisory | n/a |
Timeline
Publicly disclosed
Nov 2, 2026
Last updated
Nov 3, 2026
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
FAQ
Common Questions.
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: Barracuda Email Security Gateway (ESG); Barracuda Load Balancer Application Delivery Controller (ADC); Barracuda Message Archiver (BMA), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch in the next maintenance window, because of its high severity, although no exploitation is known.
Is CVE-2026-111560 On Your Attack Surface?
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