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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.

PUBLISHED Reserved 2026-03-28 | Published 2026-03-28 | Updated 2026-04-01 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Out-of-bounds Write

Product status

1.5.8e
affected

Credits

Juan Sacco <juan.sacco@kpn.com> at KPN Red Team - http://www.kpn.com finder

References

www.exploit-db.com/exploits/42255 (ExploitDB-42255) exploit

www.varaneckas.com/jad/ (Official Product Homepage) product

www.vulncheck.com/...d-8e-1kali1-stack-based-buffer-overflow (VulnCheck Advisory: JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow) third-party-advisory

cve.org (CVE-2017-20227)

nvd.nist.gov (CVE-2017-20227)

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