CVE-2017-20227

CRITICAL

JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow

Title source: cna
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-20227. PoCs published by Juan Sacco.

AI-analyzed exploit summary This exploit leverages a stack-based buffer overflow in JAD (Java Decompiler) 1.5.8e-1kali1 to achieve arbitrary code execution via a ROP chain. It constructs a payload that writes '/bin//sh' into memory and executes it using int 0x80.

Description

JAD Java Decompiler 1.5.8e-1kali1 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying overly long input that exceeds buffer boundaries. Attackers can craft malicious input passed to the jad command to overflow the stack and execute a return-oriented programming chain that spawns a shell.

Exploits (1)

exploitdb WORKING POC
by Juan Sacco · pythonlocallinux
https://www.exploit-db.com/exploits/42255

This exploit leverages a stack-based buffer overflow in JAD (Java Decompiler) 1.5.8e-1kali1 to achieve arbitrary code execution via a ROP chain. It constructs a payload that writes '/bin//sh' into memory and executes it using int 0x80.

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 · ability to execute the exploit locally
devstral-2 · analyzed Apr 08, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit exploit
ExploitDB-42255
https://www.exploit-db.com/exploits/42255
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
https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow

Scores

CVSS v3 9.8
EPSS 0.0067
EPSS Percentile 46.9%
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
varaneckas/jad_java_decompiler 1.5.8e-1kali1
Published Mar 28, 2026
Tracked Since Mar 29, 2026