{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-71958","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-08-08T16:43:04.177Z","datePublished":"2026-08-08T17:07:03.899Z","dateUpdated":"2026-08-08T17:21:19.315Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-08-08T17:21:19.315Z"},"title":"D-Link DWR-M961 Buffer Overflow via quicksetup.cgi","descriptions":[{"lang":"en","value":"D-Link DWR-M961 devices with hardware version C1 and software version 1.1.2_C1_202602110044 contain a buffer overflow vulnerability in the quicksetup.cgi interface. A remote attacker can write overly long strings to the test4, ssid2, and username fields and execute arbitrary commands by crafting a specific payload, or cause the device to crash."}],"datePublic":"2026-08-03T00:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","type":"CWE"}]}],"affected":[{"defaultStatus":"affected","vendor":"D-Link Corporation","product":"DWR-M961","versions":[{"status":"affected","version":"0","versionType":"custom","lessThan":"1.1.5_C1_202607071108"}]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","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":"CRITICAL","baseScore":9.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","version":"3.1","baseSeverity":"CRITICAL","baseScore":9.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}}],"references":[{"url":"https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10512","name":"D-Link Advisory","tags":["vendor-advisory","patch"]},{"url":"https://www.dlink.com/middle-east/en/products/dwr-m961-4g-ac1200-lte-router","name":"Product Webpage","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/d-link-dwr-m961-buffer-overflow-via-quicksetup-cgi","tags":["third-party-advisory"]}],"credits":[{"lang":"en","value":"Jincheng Wang (@winmt), Professor Le Yu of Nanjing University of Posts and Telecommunications, and Professor Xiapu Luo of The Hong Kong Polytechnic University","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}}}}