{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2021-47753", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-01-10T13:48:08.268Z", "datePublished": "2026-01-15T15:52:03.459Z", "dateUpdated": "2026-04-07T14:05:56.353Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-04-07T14:05:56.353Z" }, "title": "phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)", "descriptions": [ { "lang": "en", "value": "phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter." } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "description": "Unrestricted Upload of File with Dangerous Type", "cweId": "CWE-434", "type": "CWE" } ] } ], "affected": [ { "vendor": "Phpkf", "product": "phpKF CMS", "versions": [ { "version": "3.00", "status": "affected" } ] } ], "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" } ], "references": [ { "url": "https://www.exploit-db.com/exploits/50610", "name": "ExploitDB-50610", "tags": [ "exploit" ] }, { "url": "https://www.phpkf.com/", "name": "Official Vendor Homepage", "tags": [ "product" ] }, { "url": "https://www.phpkf.com/indirme.php", "name": "Software Download Page", "tags": [ "product" ] } ], "credits": [ { "lang": "en", "value": "Halit AKAYDIN (hLtAkydn)", "type": "finder" } ], "x_generator": { "engine": "vulncheck" }, "datePublic": "2021-12-20T00:00:00.000Z" }, "adp": [ { "references": [ { "url": "https://www.exploit-db.com/exploits/50610", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-01-15T18:24:59.438487Z", "id": "CVE-2021-47753", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-15T18:27:25.683Z" } } ] } }