CVE-2016-20049

CRITICAL

JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2016-20049. PoCs published by Juan Sacco.

AI-analyzed exploit summary This exploit demonstrates a stack-based buffer overflow in JAD (Java Decompiler) 1.5.8e-1kali1 by crafting a malicious input buffer with NOPs, shellcode, and a ROP call to execute arbitrary code. The exploit leverages a lack of boundary checks to trigger a denial-of-service or remote code execution.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Juan Sacco · pythonlocallinux
https://www.exploit-db.com/exploits/42076

This exploit demonstrates a stack-based buffer overflow in JAD (Java Decompiler) 1.5.8e-1kali1 by crafting a malicious input buffer with NOPs, shellcode, and a ROP call to execute arbitrary code. The exploit leverages a lack of boundary checks to trigger a denial-of-service or remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: JAD (Java Decompiler) 1.5.8e-1kali1 and prior
No auth needed
Prerequisites: JAD installed on the target system
devstral-2 · analyzed Apr 08, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-42076
https://www.exploit-db.com/exploits/42076
Product product
Official Product Homepage
http://www.varaneckas.com/jad/
Third Party Advisory third-party-advisory
VulnCheck Advisory: JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution
https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow-remote-code-execution

Scores

CVSS v3 9.8
EPSS 0.0011
EPSS Percentile 29.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-787
Status published
Products (2)
Varaneckas/JAD Java Decompiler 1.5.8e-1kali1
varaneckas/jad_java_decompiler 1.5.8e-1kali1
Published Mar 28, 2026
Tracked Since Mar 29, 2026