{"id":"CVE-2026-5994","state":"PUBLISHED","title":"Totolink A7100RU CGI cstecgi.cgi setTelnetCfg os command injection","description":"A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument telnet_enabled results in os command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.","publishedAt":"2026-04-10T00:30:13.988Z","updatedAt":"2026-04-10T17:06:56.098Z","severity":{"score":9.3,"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:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Totolink A7100RU"],"affected":[{"vendor":"Totolink","product":"A7100RU","versions":[{"version":"7.4cu.2313_b20191024","status":"affected"}],"cpes":["cpe:2.3:o:totolink:a7100ru_firmware:*:*:*:*:*:*:*:*"],"modules":["CGI Handler"]}],"references":["https://vuldb.com/vuln/356548","https://vuldb.com/vuln/356548/cti","https://vuldb.com/submit/792042","https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_166/README.md","https://www.totolink.net/"],"weaknesses":["CWE-78","CWE-77"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/5xxx/CVE-2026-5994.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-5994","state":"PUBLISHED","datePublished":"2026-04-10T00:30:13.988Z","dateUpdated":"2026-04-10T17:06:56.098Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-04-09T12:49:11.117Z"},"containers":{"cna":{"title":"Totolink A7100RU CGI cstecgi.cgi setTelnetCfg os command injection","descriptions":[{"lang":"en","value":"A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. This issue affects the function setTelnetCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument telnet_enabled results in os command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks."}],"affected":[{"vendor":"Totolink","product":"A7100RU","versions":[{"version":"7.4cu.2313_b20191024","status":"affected"}],"cpes":["cpe:2.3:o:totolink:a7100ru_firmware:*:*:*:*:*:*:*:*"],"modules":["CGI Handler"]}],"references":[{"url":"https://vuldb.com/vuln/356548","name":"VDB-356548 | Totolink A7100RU CGI cstecgi.cgi setTelnetCfg os command injection","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/356548/cti","name":"VDB-356548 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/792042","name":"Submit #792042 | Totolink A7100RU 7.4cu.2313_b20191024 Command Injection","tags":["third-party-advisory"]},{"url":"https://github.com/Litengzheng/vuldb_new/blob/main/A7100RU/vul_166/README.md","tags":["exploit"]},{"url":"https://www.totolink.net/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":9.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":9.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":9.8,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/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-78","type":"CWE","lang":"en","description":"OS Command Injection"}]},{"descriptions":[{"cweId":"CWE-77","type":"CWE","lang":"en","description":"Command Injection"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-04-10T00:30:13.988Z"},"timeline":[{"time":"2026-04-09T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-04-09T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-04-09T14:54:29.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"LtzHust (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-10T17:06:42.424412Z","id":"CVE-2026-5994","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":"2026-04-10T17:06:56.098Z"}}]}}}