{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-31062", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-04-06T19:51:52.375Z", "dateReserved": "2026-03-09T00:00:00.000Z", "datePublished": "2026-04-06T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-04-06T14:55:47.540Z"}, "descriptions": [{"lang": "en", "value": "UTT Aggressive 520W v3v1.7.7-180627 was discovered to contain a buffer overflow in the filename parameter of the formFtpServerDirConfig function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/zxq0408/Vul202601/blob/main/7.md"}], "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": 4.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-06T19:51:46.440811Z", "id": "CVE-2026-31062", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-06T19:51:52.375Z"}}]}, "dataVersion": "5.2"}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "UTT Aggressive 520W v3v1.7.7-180627 was discovered to contain a buffer overflow in the filename parameter of the formFtpServerDirConfig function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input."}], "id": "CVE-2026-31062", "lastModified": "2026-04-06T20:16:22.720", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 4.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-04-06T15:17:08.840", "references": [{"source": "cve@mitre.org", "url": "https://github.com/zxq0408/Vul202601/blob/main/7.md"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-120"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "v3v1.7.7-180627"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "520w", "vendor": "utt"}], "analysis": {"en": {"generated_at": "2026-04-06T17:53:42.985014+00:00", "value": {"mitigation_remediation": ["Apply a firmware update that addresses the buffer overflow.", "If a patch is unavailable, disable the FTP service on the device to remove the attack surface.", "Implement monitoring to detect abnormal FTP activity and repeated crashes in system logs.", "Use network segmentation or firewall rules to restrict the FTP port to trusted hosts only."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service"}, "threat_synthesis": {"affected_systems": "The vulnerability affects only UTT Aggressive 520W routers running firmware v3v1.7.7-180627. No other vendors or product variations are reported to be impacted.", "description_and_impact": "A buffer overflow exists in the filename parameter of the formFtpServerDirConfig function within UTT Aggressive 520W firmware v3v1.7.7-180627. By sending a specially crafted filename through the FTP service, an attacker can corrupt memory and force the service to crash, resulting in a denial\u2011of\u2011service condition.", "risk_and_exploitability": "Specific CVSS or EPSS scores are not provided, and the vulnerability does not appear in any known exploited vulnerability catalog. The attack can be launched remotely by an attacker who can reach the device\u2019s FTP port. While it does not provide further system compromise, it can disrupt network operations by causing the FTP service to stop, which may be significant in environments where the router is exposed to untrusted networks."}}}}, "created": "2026-04-06T20:22:04.097100+00:00", "title": "UTT Aggressive 520W Firmware Buffer Overflow in FTP Configuration Causes DoS", "updated": "2026-04-06T21:47:55.005087+00:00", "vendors": ["utt", "utt$PRODUCT$520w"], "weaknesses": ["CWE-119"]}