{"id":"CVE-2026-19811","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-19811","generatedAt":"2026-10-28T02:24:06.992Z","title":"The manipulation of the argument Comment results in stack-based buffer overflow.","description":"A security flaw has been discovered in TOTOLINK A800R 4.1.2cu.5137_B20200730. The impacted element is the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component firewall.so. The manipulation of the argument Comment results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.","published":"2026-08-14T07:16:53.000Z","lastModified":"2026-08-18T02:17:26.000Z","status":"Deferred","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":7.4,"severity":"HIGH","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/M"},"cwe":["CWE-119","CWE-121"],"affected":[],"epss":{"score":0.00854,"percentile":0.58028,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/panda666-888/vuls/blob/main/totolink/a800r/setIpQosRules.md","source":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-19811","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/869425","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/389947","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/389947/cti","source":"cna@vuldb.com"},{"url":"https://www.totolink.net/","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-19811","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}