Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

Added to KEV
2023-05-26
Federal due date
2023-06-16
Vendor
Barracuda Networks
Product
Email Security Gateway (ESG) Appliance
EPSS
99.6th percentile (score 0.892, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2023-2868

CISA short description

Barracuda Email Security Gateway (ESG) appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.