CVE-2025-60685

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:totolink:a720r_firmware:4.1.5cu.614_b20230630:*:*:*:*:*:*:*", "matchCriteriaId": "BCA249C9-68D4-48FE-B0CA-77ECF53DDE3B", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:totolink:a720r:-:*:*:*:*:*:*:*", "matchCriteriaId": "A1DE5168-B787-462C-B024-2B8F73759034", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A stack buffer overflow exists in the ToToLink A720R Router firmware V4.1.5cu.614_B20230630 within the sysconf binary (sub_401EE0 function). The binary reads the /proc/stat file using fgets() into a local buffer and subsequently parses the line using sscanf() into a single-byte variable with the %s format specifier. Maliciously crafted /proc/stat content can overwrite adjacent stack memory, potentially allowing an attacker with filesystem write privileges to execute arbitrary code on the device."}, {"lang": "es", "value": "Existe un desbordamiento de b\u00fafer de pila en el firmware del router ToToLink A720R V4.1.5cu.614_B20230630 dentro del binario sysconf (funci\u00f3n sub_401EE0). El binario lee el archivo /proc/stat usando fgets() en un b\u00fafer local y posteriormente analiza la l\u00ednea usando sscanf() en una variable de un solo byte con el especificador de formato %s. Contenido de /proc/stat creado maliciosamente puede sobrescribir la memoria de pila adyacente, lo que podr\u00eda permitir a un atacante con privilegios de escritura en el sistema de archivos ejecutar c\u00f3digo arbitrario en el dispositivo."}], "id": "CVE-2025-60685", "lastModified": "2026-11-05T14:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 5.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-60685", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2025-11-13T17:26:54.900240Z", "version": "2.0.3"}}]}, "published": "2025-11-13T16:15:52.470", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60685.md"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://www.totolink.net/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"created": "2025-11-14T09:28:17.417912+00:00", "updated": "2025-11-14T09:28:17.417938+00:00", "vendors": ["totolink", "totolink$PRODUCT$a720r", "totolink$PRODUCT$a720r_firmware"]}