CVE-2026-111560: Barracuda Networks Barracuda Email Security Gateway (ESG) (High, CVSS 8.6)
- CVSS
- 8.6 High (v4.0)
- EPSS
- 0.5% chance of exploitation in the next 30 days (higher than 40.8% of CVEs)
- Exploited in the wild
- Not on CISA’s KEV list
- Public exploit
- None reported in public exploit databases
- Weakness
- CWE-78
- Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N- Published
- Nov 2, 2026
What it is
Improper neutralization of shell metacharacters in the timezone configuration field in certain Barracuda appliance products using common Barracuda code allows an authenticated administrator to inject OS commands that execute with root privileges when the crafted timezone value is subsequently processed.
Description from the National Vulnerability Database.
What to do
Check whether you run Barracuda Networks Barracuda Email Security Gateway (ESG), then apply the vendor’s fix or mitigation from the advisories below.
ThreatRoundup coverage
Two Barracuda Bugs Chain From No Password to Root on Email Gateways
Sources: NVD, FIRST EPSS, CISA KEV, and public exploit databases (availability only). ThreatRoundup reports whether public exploit code exists but never links to it: fake proof-of-concepts that infect security researchers are common. This page updates automatically.