High

Experts Demonstrate Barracuda Email Security Gateway Chain Enabling Root Access Without Login

The Hacker News

November 6, 2026 at 5:39 AM

Overview

Researchers have identified two vulnerabilities in Barracuda's Email Security Gateway that could allow attackers to gain root access without needing to log in. The first flaw, known as CVE-2026-116606, is an authorization bypass, which lets unauthorized users execute commands on the device. Barracuda issued patches for these vulnerabilities on Monday, following the detailed reporting by the security firm watchTowr on Thursday. This is concerning because root access grants full control over the email-filtering appliance, potentially compromising sensitive communications. Organizations using this gateway should prioritize applying the patches to secure their systems against potential exploitation.

Key Takeaways

Affected Systems: Barracuda Email Security Gateway
Action Required: Barracuda released patches on Monday to address the vulnerabilities.
Timeline: Disclosed on [date]

Original Article Summary

Two flaws in Barracuda's Email Security Gateway, an email-filtering appliance, can be chained to run commands on it as root, its highest level of access, with no login required. The company released patches on Monday, and the security firm watchTowr detailed the attack chain on Thursday. One flaw, CVE-2026-116606, is an authorization bypass. An unauthenticated attacker can use it to restore a

Impact

Barracuda Email Security Gateway

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Disclosed on [date]

Remediation

Barracuda released patches on Monday to address the vulnerabilities. Users should ensure they apply these patches immediately to mitigate the risks associated with the identified flaws.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, Barracuda.

Read Original Article

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