CVE-2026-75118

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-75118", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "state": "PUBLISHED", "assignerShortName": "TPLink", "dateReserved": "2026-08-17T18:18:43.498Z", "datePublished": "2026-08-28T20:31:03.977Z", "dateUpdated": "2026-09-01T14:46:29.955Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-08-28T20:31:03.977Z"}, "title": "http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "CWE-121 Stack-based buffer overflow", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "affected": [{"vendor": "TP-Link Systems Inc.", "product": "TL-MR100 v3.20", "modules": ["/usr/bin/httpd"], "versions": [{"status": "affected", "version": "0", "lessThan": "(EU)_1.3.0 Build 260609", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.\n\n\n\n\n\n\n\nSuccessful exploitation can overwrite saved control-flow data on the httpd process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><div>A pre-authentication stack-based buffer overflow vulnerability exists in the <code>http_gdpr_decrypt</code> function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the <code>/cgi/login</code> endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.</div></div><div><br></div>\n<div>Successful exploitation can overwrite saved control-flow data on the <code>httpd</code> process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.</div>"}]}], "references": [{"url": "https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware", "tags": ["patch"]}, {"url": "https://www.tp-link.com/en/support/faq/5271/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "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": 8.7, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Kylian Eury", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-01T03:56:22.838725Z", "id": "CVE-2026-75118", "options": [{"Exploitation": "none"}, {"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": "2026-09-01T14:46:29.955Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-75118", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-01T03:56:22.838725Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-01T14:46:26.270Z"}}], "cna": {"title": "http_gdpr_decrypt Pre-Authentication Stack-Based Buffer Overflow", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Kylian Eury"}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "ADJACENT", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "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"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "TP-Link Systems Inc.", "modules": ["/usr/bin/httpd"], "product": "TL-MR100 v3.20", "versions": [{"status": "affected", "version": "0", "lessThan": "(EU)_1.3.0 Build 260609", "versionType": "custom"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware", "tags": ["patch"]}, {"url": "https://www.tp-link.com/en/support/faq/5271/", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.4"}, "descriptions": [{"lang": "en", "value": "A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.\n\n\n\n\n\n\n\nSuccessful exploitation can overwrite saved control-flow data on the httpd process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.", "supportingMedia": [{"type": "text/html", "value": "<div><div>A pre-authentication stack-based buffer overflow vulnerability exists in the <code>http_gdpr_decrypt</code> function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the <code>/cgi/login</code> endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.</div></div><div><br></div>\n<div>Successful exploitation can overwrite saved control-flow data on the <code>httpd</code> process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process.</div>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121 Stack-based buffer overflow"}]}], "providerMetadata": {"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-08-28T20:31:03.977Z"}}}, "cveMetadata": {"cveId": "CVE-2026-75118", "state": "PUBLISHED", "dateUpdated": "2026-09-01T14:46:29.955Z", "dateReserved": "2026-08-17T18:18:43.498Z", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "datePublished": "2026-08-28T20:31:03.977Z", "assignerShortName": "TPLink"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "modules": ["/usr/bin/httpd"], "product": "TL-MR100 v3.20", "vendor": "TP-Link Systems Inc.", "versions": [{"lessThan": "(EU)_1.3.0 Build 260609", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A pre-authentication stack-based buffer overflow vulnerability exists in the http_gdpr_decrypt function of TL-MR100 V3.20 due to insufficient bounds checking of encrypted requests to the /cgi/login endpoint. An adjacent unauthenticated attacker with access to the router's web management interface can trigger memory corruption and potentially achieve arbitrary code execution.\n\n\n\n\n\n\n\nSuccessful exploitation can overwrite saved control-flow data on the httpd process stack prior to authentication, resulting in a service crash or potential arbitrary code execution in the context of the affected process."}], "id": "CVE-2026-75118", "lastModified": "2026-09-01T20:50:58.753", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-75118", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-01T03:56:22.838725Z", "version": "2.0.3"}}]}, "published": "2026-08-28T22:16:52.880", "references": [{"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/en/support/download/tl-mr100/v3.20/#Firmware"}, {"source": "f23511db-6c3e-4e32-a477-6aa17d310630", "url": "https://www.tp-link.com/en/support/faq/5271/"}], "sourceIdentifier": "f23511db-6c3e-4e32-a477-6aa17d310630", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "f23511db-6c3e-4e32-a477-6aa17d310630", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,(EU)_1.3.0 Build 260609)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "tl-mr100_v3.20", "vendor": "tp-link"}], "created": "2026-08-29T00:00:15.362043+00:00", "updated": "2026-08-31T21:24:34.416191+00:00", "vendors": ["tp-link", "tp-link$PRODUCT$tl-mr100_v3.20"]}