{"id":"CVE-2025-60685","aliases":["EUVD-2025-175311","GHSA-273x-ghvh-vxh2"],"status":"published","title":"A stack buffer overflow exists in the ToToLink A720R Router firmware V4.1.5cu.614_B20230630...","description":"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.","severity":{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00238,"percentile":0.1501,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2025-11-13T00:00:00Z","modified":"2026-11-05T14:10:00Z","products":[{"vendor":"totolink","product":"a720r_firmware"}],"references":[{"url":"https://www.totolink.net/","tags":["Product"]},{"url":"https://github.com/yifan20020708/SGTaint-0-day/blob/main/ToToLink/ToToLink-A720R/CVE-2025-60685.md","tags":["Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-60685"},{"url":"https://www.totolink.net"},{"url":"http://totolink.com"},{"url":"https://github.com/advisories/GHSA-273x-ghvh-vxh2"}],"sources":{"cve":[{"id":"CVE-2025-60685","description":"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.","status":"published","published":"2025-11-13T00:00:00Z","modified":"2026-07-05T01:19:23.275Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"adp"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:32:39.719629Z"}],"euvd":[{"id":"EUVD-2025-175311","description":"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.","status":"published","published":"2025-11-13T00:00:00Z","modified":"2026-07-05T01:19:23Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T18:20:15.276406Z"}],"ghsa":[{"id":"GHSA-273x-ghvh-vxh2","title":"A stack buffer overflow exists in the ToToLink A720R Router firmware V4.1.5cu.614_B20230630...","description":"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.","status":"published","published":"2025-11-13T18:31:04Z","modified":"2025-11-13T18:31:11Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:04:47.510067Z"}],"nvd":[{"id":"CVE-2025-60685","description":"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.","status":"published","published":"2025-11-13T16:15:52.47Z","modified":"2026-11-05T14:10:00.273Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-05T19:55:51.56159Z"}]}}