CVE-2017-20227

JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow

CVSS 9.3 CRITICALEPSS 0.7%CWE-787

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.3EPSS 0.7%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

28 Mar 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Varaneckas · JAD Java Decompiler

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/42255unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

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