Vulnerability-Lookup

GHSA-5W3W-4XG4-WWHF

Vulnerability from github – Published: 2026-03-16 15:30 – Updated: 2026-03-16 15:30

Details

ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.

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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2016-20024"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-538"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-16T14:17:48Z",
    "severity": "CRITICAL"
  },
  "details": "ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.",
  "id": "GHSA-5w3w-4xg4-wwhf",
  "modified": "2026-03-16T15:30:40Z",
  "published": "2026-03-16T15:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-20024"
    },
    {
      "type": "WEB",
      "url": "https://cxsecurity.com/issue/WLB-2016080264"
    },
    {
      "type": "WEB",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/116487"
    },
    {
      "type": "WEB",
      "url": "https://packetstormsecurity.com/files/138565"
    },
    {
      "type": "WEB",
      "url": "https://www.exploit-db.com/exploits/40322"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation"
    },
    {
      "type": "WEB",
      "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php"
    }
  ],
  "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-2016-20024 (GCVE-0-2016-20024)

Vulnerability from cvelistv5 – Published: 2026-03-15 13:35 – Updated: 2026-03-16 14:20

Title

ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation

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-538 - Insertion of Sensitive Information into Externally-Accessible File or Directory

Assigner

VulnCheck

References

URL

Tags

	https://www.zeroscience.mk/en/vulnerabilities/ZSL…	third-party-advisory
	https://cxsecurity.com/issue/WLB-2016080264	third-party-advisory
	https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entry
	https://packetstormsecurity.com/files/138565	exploit
	https://www.exploit-db.com/exploits/40322/	exploit
	https://www.vulncheck.com/advisories/zkteco-zktim…	third-party-advisory

Impacted products

	Vendor	Product	Version
	ZKTeco Inc.	ZKTeco ZKTime.Net	Affected: 3.0.1.6 Affected: 3.0.1.5 (160622) Affected: 3.0.1.1 (160216)

Date Public ?

2016-08-30 00:00

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2016-20024",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-16T14:15:52.330964Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-16T14:20:21.142Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ZKTeco ZKTime.Net",
          "vendor": "ZKTeco Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.1.6"
            },
            {
              "status": "affected",
              "version": "3.0.1.5 (160622)"
            },
            {
              "status": "affected",
              "version": "3.0.1.1 (160216)"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "LiquidWorm as Gjoko Krstic of Zero Science Lab"
        }
      ],
      "datePublic": "2016-08-30T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "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",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-15T13:35:11.360Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Zero Science Lab Disclosure",
          "tags": [
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          ],
          "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php"
        },
        {
          "name": "CXSecurity",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cxsecurity.com/issue/WLB-2016080264"
        },
        {
          "name": "IBM X-Force Exchange",
          "tags": [
            "vdb-entry"
          ],
          "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/116487"
        },
        {
          "name": "Packet Storm Security",
          "tags": [
            "exploit"
          ],
          "url": "https://packetstormsecurity.com/files/138565"
        },
        {
          "name": "Reference",
          "tags": [
            "exploit"
          ],
          "url": "https://www.exploit-db.com/exploits/40322/"
        },
        {
          "name": "VulnCheck Advisory: ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation"
        }
      ],
      "title": "ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2016-20024",
    "datePublished": "2026-03-15T13:35:11.360Z",
    "dateReserved": "2026-03-15T12:36:03.511Z",
    "dateUpdated": "2026-03-16T14:20:21.142Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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-5W3W-4XG4-WWHF

CVE-2016-20024 (GCVE-0-2016-20024)

Tags

Sightings

Nomenclature