Apache Tomcat — Java deserialization reverse shell pattern (CVE-2026-34486)

Ankit Mehta@Secvyn

•updated Aug 5, 2026•3•1•8

Detects instances where a Java process (typically a web application server like Tomcat) initiates suspicious command-line tools such as cmd.exe, powershell.exe, or various Linux shell binaries, using command-line arguments indicative of a reverse shell or code execution (e.g., -e /bin/sh, -i, /dev/tcp, IEX, DownloadString). This pattern is commonly associated with exploit attempts targeting vulnerabilities like Java deserialization.