CVE-2017-20227

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.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - disclosure@vulncheck.com

Published

2026-03-28

Last modified

2026-04-01

Weaknesses

CWE-787

Affected products

• Jad Java Decompiler (Varaneckas)

References

• http://www.varaneckas.com/jad/
• https://www.exploit-db.com/exploits/42255
• https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow