by Kastro
Paper/Archive/CVE-2026-116606

CVE-2026-116606

Barracuda Networks Barracuda Email Security Gateway (ESG) — Authentication Bypass Allows Global Configuration Restore in Barracuda Email Security Gateway

CVSS 9.3
critical.is priorityof 100
28
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Barracuda Email Security Gateway (ESG)< 9.4.0.0309.4.0.030CNA

Scores by source

Mandiant (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

writeupgithub.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0042.mdadvisorytrust.barracuda.com/security/pre-authentication-authorization-bypass-command-injection