Is CVE-2026-116606 exploited in the wild?

Yes. CVE-2026-116606 is known to be exploited in the wild, first recorded on 10 November 2026. Treat it as urgent.

How severe is CVE-2026-116606?

Critical severity, published 2 November 2026.

Which products and versions are affected?

Barracuda Email Security Gateway earlier than 9.4.0.030.

Is there a fix for CVE-2026-116606?

Yes: fixed in 9.4.0.030. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-116606 attacked?

It is attacked over the network.

Am I affected by CVE-2026-116606?

Check whether you run Barracuda Email Security Gateway or Barracuda Networks Barracuda Email Security Gateway (Esg) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-116606: Barracuda Email Security Gateway authentication bypass

CVE-2026-116606 · Severity: critical · Exploited in the wild · Published 2026-11-02

Barracuda Email Security Gateway is an appliance that protects enterprise email from threats. An authentication bypass flaw allows remote attackers without credentials to import and restore a malicious backup file, enabling them to modify the gateway's configuration and potentially redirect, intercept, or disable email security protections.

Vendors: Barracuda.

Quick answers

Is CVE-2026-116606 exploited in the wild?: Yes. CVE-2026-116606 is known to be exploited in the wild, first recorded on 10 November 2026. Treat it as urgent.
How severe is CVE-2026-116606?: Critical severity, published 2 November 2026.
Which products and versions are affected?: Barracuda Email Security Gateway earlier than 9.4.0.030.
Is there a fix for CVE-2026-116606?: Yes: fixed in 9.4.0.030. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-116606 attacked?: It is attacked over the network.
Am I affected by CVE-2026-116606?: Check whether you run Barracuda Email Security Gateway or Barracuda Networks Barracuda Email Security Gateway (Esg) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 9.4.0.030

Technical details

The vulnerability is an authentication bypass (CWE-288) in the configuration-import function that fails to validate credentials before allowing backup restore operations. An unauthenticated remote attacker can invoke this function over the network to restore a crafted backup archive, resulting in unauthorized modification of appliance global settings. The attack requires no user interaction, authentication, or special conditions.

Affected products

Barracuda Email Security Gateway earlier than 9.4.0.030

Timeline

2026-10-22: disclosed: Reported by Barracuda
2026-11-02: advisory: CVE published and Mandiant advisory released

References

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