{"id":"CVE-2025-12240","title":"A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024","summary":"A security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to i…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-119","CWE-120","CWE-120"],"vendor":"totolink","product":"a3300r_firmware","affected":["a3300r_firmware = 17.0.0cu.557_b20221024"],"published":"2025-10-27","updated":"2026-10-08","sourceUpdated":"2026-10-08T11:10:00.250","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-12240","references":[{"url":"https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setDmzCfg.md","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?ctiid.329910","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?id.329910","label":"cna@vuldb.com"},{"url":"https://vuldb.com/?submit.673722","label":"cna@vuldb.com"},{"url":"https://www.totolink.net/","label":"cna@vuldb.com"}],"tags":["nvd"],"epss":0.00836,"epssPercentile":0.56419,"ingestedAt":"2026-10-08T11:31:27.622Z","slug":"CVE-2025-12240","body":"## Overview\n\nA security vulnerability has been detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.\n\n## Affected\n\n- `a3300r_firmware = 17.0.0cu.557_b20221024`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}