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VulnerabilitiesNov 3, 2026

Barracuda Flaws Could Be Chained to Bypass Authorization and Gain Root Access

Barracuda discloses two chained vulnerabilities enabling authorization bypass and root access

Barracuda has disclosed two vulnerabilities that can be chained together to bypass authorization controls and gain root access to affected devices. The flaws include a pre-authentication authorization bypass (CVE-2026-116606, CVSS 9.3) and a command injection vulnerability. Attackers exploiting this chain could achieve unauthenticated root-level compromise.

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The lesson from this incident

Full lesson

Two vulnerabilities in Barracuda devices — a pre-authentication authorization bypass (CVE-2026-116606, CVSS 9.3) and a command injection flaw — can be chained to grant attackers unauthenticated root-level control without any credentials. This attack chain is especially dangerous because it requires no prior access, dramatically lowering the bar for exploitation. Security appliances like Barracuda devices are often perimeter-facing, meaning a successful compromise can serve as a launchpad into the broader network. The severity of this chain underscores why timely vulnerability management and strict access controls on administrative interfaces are non-negotiable for internet-exposed appliances.

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Indicators of Compromise

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  • cve — CVE-2026-116606

Entities

Barracuda (vendor)Authorization/Authentication (technology)