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.

CVSS v4.0

9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.67% chance of exploitation in the next 30 days, 49th percentile

Published

2026-03-28

Updated

2026-04-01

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/42255

References

• CVE Record
• NVD entry

Related

• CVE-2017-20226
• CVE-2017-20228
• CVE-2017-20225
• CVE-2017-20229
• CVE-2017-20223
• CVE-2017-20239