{"id":"CVE-2026-79911","state":"PUBLISHED","title":"TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow","description":"A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.","publishedAt":"2026-08-25T22:15:13.200Z","updatedAt":"2026-08-27T14:34:41.311Z","severity":{"score":10,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","source":"VulDB"},"assigner":"VulDB","products":["TOTOLINK N600R"],"affected":[{"vendor":"TOTOLINK","product":"N600R","versions":[{"version":"4.3.0cu.7647_B20210106","status":"affected"}],"cpes":["cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*"],"modules":["CGI Handler"]}],"references":["https://vuldb.com/vuln/395061","https://vuldb.com/vuln/395061/cti","https://vuldb.com/cve/CVE-2026-79911","https://vuldb.com/submit/881258","https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md","https://www.totolink.net/"],"weaknesses":["CWE-121","CWE-119"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/79xxx/CVE-2026-79911.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-79911","state":"PUBLISHED","datePublished":"2026-08-25T22:15:13.200Z","dateUpdated":"2026-08-27T14:34:41.311Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-08-25T14:57:17.413Z"},"containers":{"cna":{"title":"TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow","descriptions":[{"lang":"en","value":"A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used."}],"affected":[{"vendor":"TOTOLINK","product":"N600R","versions":[{"version":"4.3.0cu.7647_B20210106","status":"affected"}],"cpes":["cpe:2.3:o:totolink:n600r_firmware:*:*:*:*:*:*:*:*"],"modules":["CGI Handler"]}],"references":[{"url":"https://vuldb.com/vuln/395061","name":"VDB-395061 | TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/395061/cti","name":"VDB-395061 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-79911","name":"CVE-2026-79911 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/881258","name":"Submit #881258 | Totolink N600R Wireless N Router V4.3.0cu.7647_B20210106 Stack-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md","tags":["exploit"]},{"url":"https://www.totolink.net/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":10,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":10,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":10,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"CRITICAL"}},{"cvssV2_0":{"version":"2.0","baseScore":10,"vectorString":"AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","type":"CWE","lang":"en","description":"Stack-based Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-08-25T22:15:13.200Z"},"timeline":[{"time":"2026-08-25T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-08-25T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-08-25T17:02:30.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"ST4R0002 (VulDB User)","type":"reporter"}],"x_generator":["VulDB PVTS v202608"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-27T13:31:59.101267Z","id":"CVE-2026-79911","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-27T14:34:41.311Z"}}]}}}