{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18167", "assignerOrgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "state": "PUBLISHED", "assignerShortName": "TPLink", "dateReserved": "2026-07-28T20:48:04.039Z", "datePublished": "2026-09-03T22:24:57.369Z", "dateUpdated": "2026-09-03T22:24:57.369Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f23511db-6c3e-4e32-a477-6aa17d310630", "shortName": "TPLink", "dateUpdated": "2026-09-03T22:24:57.369Z"}, "title": "Stack-based buffer overflow in TP-Link Archer AX55 v4", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "CWE-121 Stack-based buffer overflow", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-47", "descriptions": [{"lang": "en", "value": "CAPEC-47 Buffer Overflow via Parameter Expansion"}]}], "affected": [{"vendor": "TP-Link Systems Inc.", "product": "Archer AX55 v4", "modules": ["easymesh"], "versions": [{"status": "affected", "version": "0", "lessThan": "1.2.1 Build 20260527", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A\nstack-based buffer overflow vulnerability exists in the EasyMesh module of\nTP-Link Archer AX55 v4. When Mesh mode is enabled, a LAN attacker may submit\ncrafted input that causes the easymesh daemon to crash and may potentially\nachieve remote code execution on the device.\n\n\n\n\n\nSuccessful\nexploitation may cause the EasyMesh daemon to crash and may potentially allow\nremote code execution when Mesh mode is enabled. This\nmay result in high impact to the confidentiality, integrity, and availability\nof the affected device.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>A\nstack-based buffer overflow vulnerability exists in the EasyMesh module of\nTP-Link Archer AX55 v4. When Mesh mode is enabled, a LAN attacker may submit\ncrafted input that causes the easymesh daemon to crash and may potentially\nachieve remote code execution on the device.</p>\n\n<p>Successful\nexploitation may cause the EasyMesh daemon to crash and may potentially allow\nremote code execution when Mesh mode is enabled. This\nmay result in high impact to the confidentiality, integrity, and availability\nof the affected device.</p><p><br></p>"}]}], "references": [{"url": "https://www.tp-link.com/us/support/download/archer-ax55/v4/#Firmware", "tags": ["patch"]}, {"url": "https://www.tp-link.com/us/support/faq/5279/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "ADJACENT", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "LOW", "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": 7.7, "vectorString": "CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L"}}], "credits": [{"lang": "en", "value": "Tianchang Yang and Syed Rafiul Hussain (SyNSec Lab, Penn State University)", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}}}

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