Vulnerability-Lookup

GHSA-X5F7-XGG8-PR9P

Vulnerability from github – Published: 2026-03-28 12:30 – Updated: 2026-03-28 12:30

Details

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.

Severity ?

9.8 (Critical)


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

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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2016-20049"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-28T12:16:01Z",
    "severity": "CRITICAL"
  },
  "details": "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.",
  "id": "GHSA-x5f7-xgg8-pr9p",
  "modified": "2026-03-28T12:30:29Z",
  "published": "2026-03-28T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-20049"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/42076"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow-remote-code-execution"
    },
    {
      "type": "WEB",
      "url": "http://www.varaneckas.com/jad"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/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",
      "type": "CVSS_V4"
    }
  ]
}

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

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2016-20049",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T12:48:35.303235Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
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        },
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      }
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          "product": "JAD Java Decompiler",
          "vendor": "Varaneckas",
          "versions": [
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              "status": "affected",
              "version": "1.5.8e-1kali1"
            }
          ]
        }
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      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Juan Sacco \u003cjuan.sacco@kpn.com\u003e at KPN Red Team - http://www.kpn.com"
        }
      ],
      "datePublic": "2017-05-26T00:00:00.000Z",
      "descriptions": [
        {
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
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            "baseSeverity": "CRITICAL",
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            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
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            "vulnAvailabilityImpact": "HIGH",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "problemTypes": [
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              "lang": "en",
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      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      },
      "references": [
        {
          "name": "ExploitDB-42076",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/42076"
        },
        {
          "name": "Official Product Homepage",
          "tags": [
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          ],
          "url": "http://www.varaneckas.com/jad/"
        },
        {
          "name": "VulnCheck Advisory: JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/jad-8e-1kali1-stack-based-buffer-overflow-remote-code-execution"
        }
      ],
      "title": "JAD 1.5.8e-1kali1 Stack-Based Buffer Overflow Remote Code Execution",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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    "dateReserved": "2026-03-28T11:42:00.467Z",
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  },
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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

GHSA-X5F7-XGG8-PR9P

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

Tags

Sightings

Nomenclature