CVE-2016-20024 (GCVE-0-2016-20024)
Vulnerability from cvelistv5
Published
2026-03-15 13:35
Modified
2026-07-28 01:46
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
Summary
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.
References
Impacted products
Vendor Product Version
ZKTeco Inc. ZKTeco ZKTime.Net Version: 3.0.1.6
Version: 3.0.1.5 (160622)
Version: 3.0.1.1 (160216)
 Create a notification for this product.
Show details on NVD website

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)"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:zkteco:zktime:3.0.1.6:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:zkteco:zktime:3.0.1.5:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:zkteco:zktime:3.0.1.1:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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",
            "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": [
        {
          "descriptions": [
            {
              "cweId": "CWE-538",
              "description": "Insertion of Sensitive Information into Externally-Accessible File or Directory",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-28T01:46:26.642Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Zero Science Lab Disclosure",
          "tags": [
            "third-party-advisory"
          ],
          "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"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "The affected software ZKTime.Net has been officially discontinued. It is recommended that all users switch to using ZKBio Time.Net software. ZKBio Time.Net has fixed this vulnerability. It is recommended that users use the latest version of ZKBio Time.Net to eliminate the risk."
        }
      ],
      "tags": [
        "unsupported-when-assigned"
      ],
      "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": "2026-07-28T01:46:26.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2016-20024\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-16T14:15:52.330964Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-16T14:18:00.739Z\"}}], \"cna\": {\"tags\": [\"unsupported-when-assigned\"], \"title\": \"ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"LiquidWorm as Gjoko Krstic of Zero Science Lab\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 9.3, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"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\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 9.8, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"ZKTeco Inc.\", \"product\": \"ZKTeco ZKTime.Net\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0.1.6\"}, {\"status\": \"affected\", \"version\": \"3.0.1.5 (160622)\"}, {\"status\": \"affected\", \"version\": \"3.0.1.1 (160216)\"}]}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The affected software ZKTime.Net has been officially discontinued. It is recommended that all users switch to using ZKBio Time.Net software. ZKBio Time.Net has fixed this vulnerability. It is recommended that users use the latest version of ZKBio Time.Net to eliminate the risk.\"}], \"datePublic\": \"2016-08-30T00:00:00.000Z\", \"references\": [{\"url\": \"https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php\", \"name\": \"Zero Science Lab Disclosure\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://cxsecurity.com/issue/WLB-2016080264\", \"name\": \"CXSecurity\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://exchange.xforce.ibmcloud.com/vulnerabilities/116487\", \"name\": \"IBM X-Force Exchange\", \"tags\": [\"vdb-entry\"]}, {\"url\": \"https://packetstormsecurity.com/files/138565\", \"name\": \"Packet Storm Security\", \"tags\": [\"exploit\"]}, {\"url\": \"https://www.exploit-db.com/exploits/40322/\", \"name\": \"Reference\", \"tags\": [\"exploit\"]}, {\"url\": \"https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation\", \"name\": \"VulnCheck Advisory: ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"vulncheck\"}, \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-538\", \"description\": \"Insertion of Sensitive Information into Externally-Accessible File or Directory\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:zkteco:zktime:3.0.1.6:*:*:*:*:*:*:*\", \"vulnerable\": true}, {\"criteria\": \"cpe:2.3:a:zkteco:zktime:3.0.1.5:*:*:*:*:*:*:*\", \"vulnerable\": true}, {\"criteria\": \"cpe:2.3:a:zkteco:zktime:3.0.1.1:*:*:*:*:*:*:*\", \"vulnerable\": true}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"shortName\": \"VulnCheck\", \"dateUpdated\": \"2026-07-28T01:46:26.642Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2016-20024\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-28T01:46:26.642Z\", \"dateReserved\": \"2026-03-15T12:36:03.511Z\", \"assignerOrgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"datePublished\": \"2026-03-15T13:35:11.360Z\", \"assignerShortName\": \"VulnCheck\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.