{"id":"CVE-2026-12001","state":"PUBLISHED","title":"Hardcoded Credential Vulnerability in Multiple TP-Link Router Models","description":"A hardcoded credential\nvulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, TL-WR902AC v4, Archer C20 v6 & Archer MR200 v5).  Authentication-related credential material is\nembedded within a password file in the firmware image and may be recovered\nthrough firmware analysis.\n\n\n\n\n\nSuccessful\nexploitation could result in unauthorized access to privileged functions on\naffected devices.","publishedAt":"2026-07-27T20:08:50.230Z","updatedAt":"2026-08-11T21:03:54.866Z","severity":{"score":5.2,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","source":"TPLink"},"assigner":"TPLink","products":["TP-Link Systems Inc. TL-WR850N v3","TP-Link Systems Inc. Archer C20 v6","TP Link Systems Inc. TL-WR845N v4","TP-Link Systems Inc. Archer MR200 v5","TP Link Systems Inc. TL-WR902AC v4"],"affected":[{"vendor":"TP-Link Systems Inc.","product":"TL-WR850N v3","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048","versionType":"custom"}]},{"vendor":"TP-Link Systems Inc.","product":"Archer C20 v6","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"Archer C20(US)_V6_250630","versionType":"custom"}]},{"vendor":"TP Link Systems Inc.","product":"TL-WR845N v4","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"TL-WR845N(UN)_V4_250401","versionType":"custom"}]},{"vendor":"TP-Link Systems Inc.","product":"Archer MR200 v5","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"EU_V5.20_1.3.0 Build 260319","versionType":"custom"}]},{"vendor":"TP Link Systems Inc.","product":"TL-WR902AC v4","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"US_V4_0.9.1 Build 260810","versionType":"custom"},{"version":"0","status":"affected","lessThan":"EU_V4_0.9.3 Build 260728","versionType":"custom"}]}],"references":["https://www.tp-link.com/en/support/download/archer-mr200/v5/#Firmware","https://www.tp-link.com/in/support/download/archer-mr200/v5/#Firmware","https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware","https://www.tp-link.com/us/support/download/archer-c20/v6/#Firmware","https://www.tp-link.com/in/support/download/archer-c20/v6/#Firmware","https://www.tp-link.com/en/support/download/tl-wr845n/#Firmware","https://www.tp-link.com/in/support/download/tl-wr845n/#Firmware","https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware","https://www.tp-link.com/us/support/faq/5210/","https://www.tp-link.com/us/support/download/tl-wr902ac/v4/#Firmware","https://www.tp-link.com/en/support/download/tl-wr902ac/v4/#Firmware"],"weaknesses":["CWE-798"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12001.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12001","state":"PUBLISHED","datePublished":"2026-07-27T20:08:50.230Z","dateUpdated":"2026-08-11T21:03:54.866Z","assignerShortName":"TPLink","assignerOrgId":"f23511db-6c3e-4e32-a477-6aa17d310630","dateReserved":"2026-06-11T16:23:35.413Z"},"containers":{"cna":{"title":"Hardcoded Credential Vulnerability in Multiple TP-Link Router Models","descriptions":[{"lang":"en","value":"A hardcoded credential\nvulnerability exists in the firmware of multiple TP-Link routers (TL-WR845N v4, TL-WR850N v3, TL-WR902AC v4, Archer C20 v6 & Archer MR200 v5).  Authentication-related credential material is\nembedded within a password file in the firmware image and may be recovered\nthrough firmware analysis.\n\n\n\n\n\nSuccessful\nexploitation could result in unauthorized access to privileged functions on\naffected devices."}],"affected":[{"vendor":"TP-Link Systems Inc.","product":"TL-WR850N v3","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"TL-WR850N(IN)_V3.48_3.16.0 Build 260422_2048","versionType":"custom"}]},{"vendor":"TP-Link Systems Inc.","product":"Archer C20 v6","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"Archer C20(US)_V6_250630","versionType":"custom"}]},{"vendor":"TP Link Systems 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260728","versionType":"custom"}]}],"references":[{"url":"https://www.tp-link.com/en/support/download/archer-mr200/v5/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/in/support/download/archer-mr200/v5/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/archer-c20/v6/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/download/archer-c20/v6/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/in/support/download/archer-c20/v6/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tl-wr845n/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/in/support/download/tl-wr845n/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/in/support/download/tl-wr850n/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/us/support/faq/5210/","tags":["vendor-advisory"]},{"url":"https://www.tp-link.com/us/support/download/tl-wr902ac/v4/#Firmware","tags":["patch"]},{"url":"https://www.tp-link.com/en/support/download/tl-wr902ac/v4/#Firmware","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"PHYSICAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","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":"MEDIUM","baseScore":5.2,"vectorString":"CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-798","lang":"en","description":"CWE-798 Use of Hard-coded Credentials","type":"CWE"}]}],"providerMetadata":{"shortName":"TPLink","orgId":"f23511db-6c3e-4e32-a477-6aa17d310630","dateUpdated":"2026-08-11T21:03:54.866Z"},"impacts":[{"capecId":"CAPEC-70","descriptions":[{"lang":"en","value":"CAPEC-70 Try Common or Default Usernames and Passwords"}]}],"credits":[{"lang":"en","value":"Carlos Trujillo","type":"finder"},{"lang":"en","value":"Swaroop Dora, Akash Singh, Parth Chaurasia, Devel Lunkad, Ashutosh Kumar and S.Venkatesan , IoT Security Lab, Indian Institute of Information Technology, Allahabad","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T15:09:04.473247Z","id":"CVE-2026-12001","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA 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