{"id":"CVE-2025-12239","aliases":["EUVD-2025-36098","GHSA-mqw5-rf2x-2m89"],"status":"published","title":"TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow","description":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00836,"percentile":0.58161,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-120"],"published":"2025-10-27T06:32:10Z","modified":"2026-10-08T11:10:00Z","products":[{"vendor":"totolink","product":"a3300r"},{"vendor":"totolink","product":"a3300r_firmware"}],"references":[{"url":"https://vuldb.com/?id.329909","tags":["vdb-entry","technical-description","Third Party Advisory","VDB Entry"]},{"url":"https://vuldb.com/?ctiid.329909","tags":["signature","permissions-required","Permissions Required","VDB Entry"]},{"url":"https://vuldb.com/?submit.673721","tags":["third-party-advisory","Third Party Advisory","VDB Entry"]},{"url":"https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDdnsCfg.md","tags":["exploit","Exploit","Third Party Advisory"]},{"url":"https://www.totolink.net/","tags":["product","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-12239"},{"url":"https://www.totolink.net"},{"url":"https://github.com/advisories/GHSA-mqw5-rf2x-2m89"}],"sources":{"cve":[{"id":"CVE-2025-12239","title":"TOTOLINK A3300R cstecgi.cgi setDdnsCfg buffer overflow","description":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.","status":"published","published":"2025-10-27T06:32:10.266Z","modified":"2025-10-27T20:12:41.451Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high","assessor":"cna"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","level":"high","assessor":"cna"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","level":"high","assessor":"cna"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-120","CWE-119"],"updated_at":"2026-11-02T14:32:42.078906Z"}],"euvd":[{"id":"EUVD-2025-36098","description":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.","status":"published","published":"2025-10-27T06:32:10Z","modified":"2025-10-27T20:12:41Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","level":"high"}],"updated_at":"2026-11-02T19:49:37.020896Z"}],"ghsa":[{"id":"GHSA-mqw5-rf2x-2m89","title":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is...","description":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.","status":"published","published":"2025-10-27T09:30:16Z","modified":"2025-10-27T18:32:15Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-119","CWE-120"],"updated_at":"2026-11-02T15:04:13.776182Z"}],"nvd":[{"id":"CVE-2025-12239","description":"A weakness has been identified in TOTOLINK A3300R 17.0.0cu.557_B20221024. The impacted element is the function setDdnsCfg of the file /cgi-bin/cstecgi.cgi. Executing manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been made available to the public and could be exploited.","status":"published","published":"2025-10-27T07:15:39.403Z","modified":"2026-10-08T11:10:00.25Z","cvss":[{"version":"4.0","score":7.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"secondary"}],"cwes":["CWE-119","CWE-120"],"updated_at":"2026-11-02T14:11:40.754193Z"}]}}