{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-3227", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "state": "PUBLISHED", "assignerShortName": "TPLink", "dateReserved": "2026-02-25T20:03:19.802Z", "datePublished": "2026-03-13T21:38:31.666Z", "dateUpdated": "2026-07-01T17:31:49.401Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-03-16T16:16:25.873Z" }, "title": "Authenticated Command Injection on TP-Link TL-WR802N, TL-WR841N and TL-WR840N", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-88", "descriptions": [ { "lang": "en", "value": "CAPEC-88 OS Command Injection" } ] } ], "affected": [ { "vendor": "TP-Link Systems Inc.", "product": "TL-WR802N v4", "platforms": [ "Linux" ], "versions": [ { "status": "affected", "version": "0", "lessThan": "V4_260304", "versionType": "custom" } ], "defaultStatus": "unaffected" }, { "vendor": "TP-Link Systems Inc.", "product": "TL-WR841N v14", "platforms": [ "Linux" ], "versions": [ { "status": "affected", "version": "0", "lessThan": "V14_260303", "versionType": "custom" } ], "defaultStatus": "unaffected" }, { "vendor": "TP Link Systems Inc.", "product": "TL-WR840N v6", "platforms": [ "Linux" ], "versions": [ { "status": "affected", "version": "0", "lessThan": "V6_260304", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing. \nSuccessful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing.
Successful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.

" } ] } ], "references": [ { "url": "https://www.tp-link.com/en/support/download/tl-wr802n/v4/#Firmware", "tags": [ "patch" ] }, { "url": "https://www.tp-link.com/us/support/download/tl-wr802n/v4/#Firmware", "tags": [ "patch" ] }, { "url": "https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware", "tags": [ "patch" ] }, { "url": "https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware", "tags": [ "patch" ] }, { "url": "https://www.tp-link.com/en/support/download/tl-wr840n/v6/#Firmware", "tags": [ "patch" ] }, { "url": "https://www.tp-link.com/us/support/faq/5018/", "tags": [ "vendor-advisory" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N" } } ], "credits": [ { "lang": "en", "value": "do4choo (github.com/do4choo)", "type": "finder" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 0.5.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-07-01T03:55:43.165697Z", "id": "CVE-2026-3227", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "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": "2026-07-01T17:31:49.401Z" } } ] } }