{"id":"CVE-2026-123957","aliases":[],"cve":{"records":[{"id":"CVE-2026-123957","source":"VulDB","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-06T17:07:11.931Z","published":"2026-11-07T08:15:13.072Z","modified":"2026-11-07T08:15:13.072Z"}],"publishers":[{"name":"VulDB","role":"CNA","organizationId":"1af790b2-7ee1-4545-860a-a788eba489b5","modified":"2026-11-07T08:15:13.072Z"}],"references":[{"url":"https://vuldb.com/vuln/432020","tags":["vdb-entry","technical-description"],"source":"VulDB"},{"url":"https://vuldb.com/vuln/432020/cti","tags":["signature","permissions-required"],"source":"VulDB"},{"url":"https://vuldb.com/cve/CVE-2026-123957","tags":["third-party-advisory"],"source":"VulDB"},{"url":"https://vuldb.com/submit/1033672","tags":["third-party-advisory"],"source":"VulDB"},{"url":"https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setIpQosRules-3f953a41781f801195e5e07dfe7488b9?source=copy_link","tags":["exploit"],"source":"VulDB"},{"url":"https://www.totolink.net/","tags":["product"],"source":"VulDB"}],"weaknesses":[{"id":"CWE-120","description":"Buffer Overflow","source":"VulDB"},{"id":"CWE-119","description":"Memory Corruption","source":"VulDB"}],"applicability":[],"prioritization":[]},"title":"TOTOLINK CA300-PoE cstecgi.cgi setIpQosRules buffer overflow","titleSource":"VulDB","descriptionSource":"VulDB","description":"A vulnerability was determined in TOTOLINK CA300-PoE 6.2c.884. Impacted is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument ipStart causes buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.","score":9.9,"severity":"critical","published":"2026-11-07T08:15:13.072Z","modified":"2026-11-07T08:15:13.072Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"TOTOLINK","name":"CA300-PoE","platforms":[],"versions":[{"version":"6.2c.884","status":"affected"}],"cpes":["cpe:2.3:o:totolink:ca300-poe_firmware:*:*:*:*:*:*:*:*"],"source":"VulDB","url":"https://www.cve.org/CVERecord?id=CVE-2026-123957"}],"remediation":[],"references":["https://vuldb.com/vuln/432020","https://vuldb.com/vuln/432020/cti","https://vuldb.com/cve/CVE-2026-123957","https://vuldb.com/submit/1033672","https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setIpQosRules-3f953a41781f801195e5e07dfe7488b9?source=copy_link","https://www.totolink.net/"],"sources":[{"name":"CVE","id":"CVE-2026-123957","modified":"2026-11-07T08:15:13.072Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-123957"}],"assessments":[{"source":"VulDB","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","score":9.4},{"source":"VulDB","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C","score":9.9},{"source":"VulDB","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C","score":9.9},{"source":"VulDB","vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C","score":9}],"sourceAffected":[],"observedAt":"2026-11-07T08:20:40.618Z","kev":{"status":"not-listed","checkedAt":"2026-11-08T03:05:30.801Z"},"coverage":[{"source":"NVD","status":"no-result","checkedAt":"2026-11-07T08:25:31.999Z","attemptedAt":"2026-11-07T08:25:31.999Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-07T08:25:33.307Z","attemptedAt":"2026-11-07T08:25:33.307Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-07T08:25:33.300Z","attemptedAt":"2026-11-07T08:25:33.300Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-07T08:25:33.301Z","attemptedAt":"2026-11-07T08:25:33.301Z"}],"evidence":[],"aiSummary":{"text":"TOTOLINK CA300-PoE firmware version 6.2c.884 has a buffer overflow weakness in the setIpQosRules function of cstecgi.cgi, potentially allowing remote attacks via the ipStart argument. The impact is uncertain.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-07T08:21:02.982Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-123957"}]}}