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CVE-2026-116606— Authentication Bypass Allows Global Configuration Restore in Barracuda Email Security Gateway

Quick assessment

Affected
Barracuda Networks Barracuda Email Security Gateway (ESG)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Barracuda Email Security Gateway 9.4.0.030 之前版本中存在一个身份验证绕过漏洞，允许未经认证的远程攻击者调用配置导入功能，并恢复一个经过精心构造且兼容的备份归档文件，从而导致对设备全局配置的未授权修改。

CVSS 9.3 · Critical
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I. Basic Information for CVE-2026-116606

Vulnerability Information
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Vulnerability Title
Authentication Bypass Allows Global Configuration Restore in Barracuda Email Security Gateway
Source: CVE Program / CVE List V5
Vulnerability Description
An authentication bypass in Barracuda Email Security Gateway versions earlier than 9.4.0.030 allows an unauthenticated remote attacker to invoke a configuration-import function and restore a crafted, compatible backup archive, resulting in unauthorized modification of the appliance’s global configuration.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Barracuda Networks Barracuda Email Security Gateway (ESG) 0 ~ 9.4.0.030 -

II. Public POCs for CVE-2026-116606

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III. Intelligence Information for CVE-2026-116606

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Other References for CVE-2026-116606 (2)

IV. Related Vulnerabilities

Same product: Barracuda Email Security Gateway (ESG)
Same vendor: Barracuda Networks
Same weakness: CWE-288