{"affected":[{"product":"CA300-PoE","source":"CNA: VulDB","vendor":"TOTOLINK","versions":[{"status":"affected","version":"6.2c.884"}]}],"cveId":"CVE-2026-123957","cwes":["CWE-120","CWE-119"],"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.","epss":null,"exploits":[{"kind":"exploit","source":"CNA: VulDB","url":"https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setIpQosRules-3f953a41781f801195e5e07dfe7488b9?source=copy_link"}],"kev":null,"metrics":[{"score":9.4,"severity":"critical","source":"CNA: 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","version":"4.0"},{"score":9.9,"severity":"critical","source":"CNA: 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","version":"3.1"},{"score":9.9,"severity":"critical","source":"CNA: 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","version":"3.0"},{"score":9,"severity":"critical","source":"CNA: VulDB","vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C","version":"2.0"}],"modifiedAt":1794039313072,"publishedAt":1794039313072,"references":[{"source":"CNA: VulDB","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/432020"},{"source":"CNA: VulDB","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/432020/cti"},{"source":"CNA: VulDB","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-123957"},{"source":"CNA: VulDB","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/1033672"},{"source":"CNA: VulDB","tags":["exploit"],"url":"https://lavender-bicycle-a5a.notion.site/TOTOLINK-CA300-PoE-setIpQosRules-3f953a41781f801195e5e07dfe7488b9?source=copy_link"},{"source":"CNA: VulDB","tags":["product"],"url":"https://www.totolink.net/"}],"remediation":[],"revision":"c877ecf97210a314275b2ca16ef3a00aa24cf5aaa235bc682e6260f21aa83591","sources":[{"modifiedAt":1794039313072,"name":"CNA: VulDB","retrievedAt":1794042537119,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123957"}],"ssvc":null,"status":"published","title":"TOTOLINK CA300-PoE cstecgi.cgi setIpQosRules buffer overflow","updatedAt":1794042537119}