Vulnerability-Lookup

FKIE_CVE-2016-20049

Vulnerability from fkie_nvd - Published: 2026-03-28 12:16 - Updated: 2026-04-22 13:58

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

JAD 1.5.8e-1kali1 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying oversized input that exceeds buffer boundaries. Attackers can craft malicious input strings exceeding 8150 bytes to overflow the stack, overwrite return addresses, and execute shellcode in the application context.

References

URL	Tags
disclosure@vulncheck.com	http://www.varaneckas.com/jad/	Product
disclosure@vulncheck.com	https://www.exploit-db.com/exploits/42076	Exploit, VDB Entry
disclosure@vulncheck.com	https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow-remote-code-execution	Third Party Advisory

Impacted products

	Vendor	Product	Version
	varaneckas	jad_java_decompiler	1.5.8e-1kali1

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:varaneckas:jad_java_decompiler:1.5.8e-1kali1:*:*:*:*:*:*:*",
              "matchCriteriaId": "2E369DAD-6CD8-49AE-83F2-0CED1FEE51E1",
              "vulnerable": true
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  "descriptions": [
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      "lang": "en",
      "value": "JAD 1.5.8e-1kali1 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying oversized input that exceeds buffer boundaries. Attackers can craft malicious input strings exceeding 8150 bytes to overflow the stack, overwrite return addresses, and execute shellcode in the application context."
    },
    {
      "lang": "es",
      "value": "JAD 1.5.8e-1kali1 y versiones anteriores contiene una vulnerabilidad de desbordamiento de b\u00fafer basado en pila que permite a los atacantes ejecutar c\u00f3digo arbitrario al proporcionar una entrada sobredimensionada que excede los l\u00edmites del b\u00fafer. Los atacantes pueden crear cadenas de entrada maliciosas que excedan los 8150 bytes para desbordar la pila, sobrescribir direcciones de retorno y ejecutar shellcode en el contexto de la aplicaci\u00f3n."
    }
  ],
  "id": "CVE-2016-20049",
  "lastModified": "2026-04-22T13:58:46.537",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        "impactScore": 5.9,
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        "type": "Primary"
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    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
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          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
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          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
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          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
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  "published": "2026-03-28T12:16:01.407",
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    },
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      "source": "disclosure@vulncheck.com",
      "tags": [
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        "VDB Entry"
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      "url": "https://www.exploit-db.com/exploits/42076"
    },
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      "tags": [
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  "weaknesses": [
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  ]
}

CVE-2016-20049 (GCVE-0-2016-20049)

Vulnerability from cvelistv5 – Published: 2026-03-28 11:58 – Updated: 2026-03-30 14:53

Title

JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution

Summary

Severity ?

9.3 (Critical)


                        
                          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

9.8 (Critical)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck

References

URL

Tags

	https://www.exploit-db.com/exploits/42076	exploit
	http://www.varaneckas.com/jad/	product
	https://www.vulncheck.com/advisories/jad-8e-1kali…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Varaneckas	JAD Java Decompiler	Affected: 1.5.8e-1kali1

Date Public ?

2017-05-26 00:00

Credits

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

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2016-20049",
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                  {
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                  },
                  {
                    "Technical Impact": "total"
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T12:48:35.303235Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2016-20049

CVE-2016-20049 (GCVE-0-2016-20049)

Tags

Sightings

Nomenclature