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A remote command injection vulnerability exists in the Barracuda Email Security Gateway (appliance form factor only) product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file (tape archives). The vulnerability stems from incomplete input validation of a user-supplied .tar file as it pertains to the names of the files contained within the archive. As a consequence, a remote attacker can specifically format these file names in a particular manner that will result in remotely executing a system command through Perl's qx operator with the privileges of the Email Security Gateway product. This issue was fixed as part of BNSF-36456 patch. This patch was automatically applied to all customer appliances.
Use CWE-20, Barracuda vendor hub and Email Security Gateway 300 Firmware product page to widen CVE-2023-2868 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2023-7102 for nearby disclosures in the same product family. Additional editorial context is available in Cybersecurity Weekly Roundup: April 22, 2026 — Critical Zero-Days and Framework Failures.