{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-24108", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-03-03T01:50:09.707Z", "dateReserved": "2026-01-21T00:00:00.000Z", "datePublished": "2026-03-02T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-03-02T14:15:28.072Z"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in Tenda W20E V4.0br_V15.11.0.6. Attackers may exploit the vulnerability by controlling the value of `nptr`. When this value is passed into the `getMibPrefix` function and concatenated using `sprintf` without proper size validation, it could lead to a buffer overflow vulnerability."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://www.tenda.com.cn/material/show/2707"}, {"url": "https://github.com/akuma-QAQ/CVEreport/tree/main/D-link/CVE-2026-24108"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-120", "lang": "en", "description": "CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-03-03T01:49:28.130154Z", "id": "CVE-2026-24108", "options": [{"Exploitation": "none"}, {"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": "2026-03-03T01:50:09.707Z"}}]}, "dataVersion": "5.2"}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "V4.0br_V15.11.0.6"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "w20e", "vendor": "tenda"}], "analysis": {"en": {"generated_at": "2026-04-17T13:38:57.828935+00:00", "value": {"mitigation_remediation": ["Upgrade the Tenda W20E firmware to a version that addresses the getMibPrefix buffer overflow.", "Limit remote management access to the router\u2019s web interface to trusted internal networks or VPNs.", "Implement firewall policies to detect and block anomalous or excessively large requests to the router\u2019s management ports."], "summary": {"action": "Immediate Patch", "impact": "Arbitrary code execution"}, "threat_synthesis": {"affected_systems": "The vulnerability exists in Tenda W20E model V4.0br firmware version 15.11.0.6. No other vendors or product versions are affected according to the current data.", "description_and_impact": "A buffer overflow occurs in the Tenda W20E firmware when an attacker controls the value of the variable nptr. The value is passed to the getMibPrefix function and concatenated using sprintf without proper length checks, which can overwrite adjacent memory and give the attacker the ability to execute arbitrary code on the device.", "risk_and_exploitability": "The CVSS score of 9.8 marks this flaw as critical, and an EPSS score of less than 1% indicates a low probability of exploitation but not zero. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The attack vector is likely remote, as the attacker can influence the nptr value through network interactions with the router\u2019s management interface; however, this is inferred from the described behavior and not explicitly stated in the advisory."}}}}, "created": "2026-03-03T08:46:30.667837+00:00", "title": "Buffer Overflow in Tenda W20E Firmware via Improper Size Validation", "updated": "2026-04-17T13:45:16.030237+00:00", "vendors": ["tenda", "tenda$PRODUCT$w20e"]}