CVE-2016-20049: Varaneckas Jad Java Decompiler

Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days.

JAD 1.5.8e-1kali1 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying oversized input that exceeds buffer boundaries. Attackers can craft malicious input strings exceeding 8150 bytes to overflow the stack, overwrite return addresses, and execute shellcode in the application context.

Affected products

• Varaneckas Jad Java Decompiler: version 1.5.8e-1kali1 only

Published 2026-03-28. Last modified 2026-06-17.