{"id":"CVE-2026-121598","title":"TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow","summary":"A security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argume…","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","cvssSource":"cna","cwe":["CWE-121","CWE-119"],"vendor":"TOTOLINK","product":"A950RG","affected":["A950RG 4.1.2cu.5268_B20221104"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-11-04T18:59:00.937916Z"},"exploitAvailable":true,"published":"2026-11-04","updated":"2026-11-04","sourceUpdated":"2026-11-04T18:59:12.828Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121598","references":[{"url":"https://vuldb.com/vuln/430440","label":"VDB-430440 | TOTOLINK A950RG Basic Wireless Configuration cstecgi.cgi strcpy stack-based overflow"},{"url":"https://vuldb.com/vuln/430440/cti","label":"VDB-430440 | CTI Indicators (IOB, IOC, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-121598","label":"CVE-2026-121598 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/1022559","label":"Submit #1022559 | TOTOLINK A950RG V4.1.2cu.5268_B20221104 Stack Buffer Overflow"},{"url":"https://gist.github.com/H3rmesk1t/e283a4f3224cbd0a57d4392de60bd2c6"},{"url":"https://www.totolink.net/"}],"tags":["cve.org","exploit-available"],"epss":0.00466,"epssPercentile":0.40489,"ingestedAt":"2026-11-05T21:36:00.512Z","slug":"CVE-2026-121598","body":"## Overview\n\nA security vulnerability has been detected in TOTOLINK A950RG 4.1.2cu.5268_B20221104. This impacts the function strcpy of the file /cgi-bin/cstecgi.cgi of the component Basic Wireless Configuration Handler. The manipulation of the argument wepkey leads to stack-based 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- `A950RG 4.1.2cu.5268_B20221104`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":67,"depthScoreParts":{"impact":54.5,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}