{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-123957","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-11-06T17:07:11.931Z","datePublished":"2026-11-07T08:15:13.072Z","dateUpdated":"2026-11-07T08:15:13.072Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-11-07T08:15:13.072Z"},"title":"TOTOLINK CA300-PoE cstecgi.cgi setIpQosRules buffer overflow","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-120","lang":"en","description":"Buffer Overflow"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"TOTOLINK","product":"CA300-PoE","versions":[{"version":"6.2c.884","status":"affected"}],"cpes":["cpe:2.3:o:totolink:ca300-poe_firmware:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":9.4,"vectorString":"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","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":9.9,"vectorString":"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","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":9.9,"vectorString":"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","baseSeverity":"CRITICAL"}},{"cvssV2_0":{"version":"2.0","baseScore":9,"vectorString":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C"}}],"timeline":[{"time":"2026-11-06T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-11-06T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-11-06T18:12:32.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"wxhwxhwxh_mie (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/vuln/432020","name":"VDB-432020 | TOTOLINK CA300-PoE cstecgi.cgi setIpQosRules buffer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/432020/cti","name":"VDB-432020 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-123957","name":"CVE-2026-123957 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/1033672","name":"Submit #1033672 | TOTOLINK CA300-PoE CA300-PoE_Firmware V6.2c.884 Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setIpQosRules-3f953a41781f801195e5e07dfe7488b9?source=copy_link","tags":["exploit"]},{"url":"https://www.totolink.net/","tags":["product"]}],"x_generator":["VulDB PVTS v202611"]}}}