---
title: "CVE-2026-116606: Barracuda Email Security Gateway - Authentication Bypass"
description: "Barracuda Email Security Gateway < 9.4.0.030 contains an authentication bypass caused by improper access control in configuration-import function, letting unauthenticated remote attackers modify global configuration, exploit requires crafted backup archive."
url: https://panop.io/threat-heartbeat/CVE-2026-116606/
---

# CVE-2026-116606 Barracuda Email Security Gateway - Authentication Bypass

Barracuda Email Security Gateway < 9.4.0.030 contains an authentication bypass caused by improper access control in configuration-import function, letting unauthenticated remote attackers modify global configuration, exploit requires crafted backup archive.

CVSS base score 9.3 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-116606)

## Details

Type

Authentication Bypass

Impact

Broken Access Control, Data Tampering

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

Published

2 November 2026

Updated

3 November 2026

Weakness

[CWE-288](https://cwe.mitre.org/data/definitions/288.html)

## Vendor fix

Update to version 9.4.0.030 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-116606](https://nvd.nist.gov/vuln/detail/CVE-2026-116606)
- [https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0042.md](https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0042.md)
- [https://trust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection](https://trust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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