JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow
Priority HIGH 81CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0068 52nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Varaneckas | JAD Java Decompiler | 1.5.8e | — | No fix listed | CNA |
- JAD Java Decompiler VendorVaraneckas Affected 1.5.8e Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:varaneckas:jad_java_decompiler:1.5.8e-1kali1:*:*:*:*:*:*:* | 1.5.8e-1kali1 | Vulnerable | Varaneckas |
- cpe:2.3:a:varaneckas:jad_java_decompiler:1.5.8e-1kali1:*:*:*:*:*:*:* Versions 1.5.8e-1kali1 Vulnerable ·Varaneckas
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-20227
- 2026-10-03 Alias added: GHSA-qfhh-979f-m8jg
References
Exploit 1
Other 1
More Varaneckas Jad Java Decompiler vulnerabilities
- TI-2016-09225 JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution CVSS 4.0CRITICAL 9.3
Sources
- CVE-2017-20227 · CVE Program
- CVE-2017-20227 · NVD
- FIRST EPSS
- GHSA-qfhh-979f-m8jg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences