{"id":"CVE-2026-1638","state":"PUBLISHED","title":"Tenda AC21 mDMZSetCfg command injection","description":"A security flaw has been discovered in Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16. The impacted element is the function mDMZSetCfg of the file /goform/mDMZSetCfg. The manipulation of the argument dmzIp results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.","publishedAt":"2026-01-29T23:32:11.350Z","updatedAt":"2026-02-23T09:08:03.393Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Tenda AC21"],"affected":[{"vendor":"Tenda","product":"AC21","versions":[{"version":"1.1.1.1","status":"affected"},{"version":"1.dmzip","status":"affected"},{"version":"16.03.08.16","status":"affected"}],"cpes":["cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/?id.343417","https://vuldb.com/?ctiid.343417","https://vuldb.com/?submit.740871","https://github.com/LX-LX88/cve/issues/26","https://www.tenda.com.cn/"],"weaknesses":["CWE-77","CWE-74"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1638.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1638","state":"PUBLISHED","datePublished":"2026-01-29T23:32:11.350Z","dateUpdated":"2026-02-23T09:08:03.393Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-01-29T16:56:25.779Z"},"containers":{"cna":{"title":"Tenda AC21 mDMZSetCfg command injection","descriptions":[{"lang":"en","value":"A security flaw has been discovered in Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16. The impacted element is the function mDMZSetCfg of the file /goform/mDMZSetCfg. The manipulation of the argument dmzIp results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks."}],"affected":[{"vendor":"Tenda","product":"AC21","versions":[{"version":"1.1.1.1","status":"affected"},{"version":"1.dmzip","status":"affected"},{"version":"16.03.08.16","status":"affected"}],"cpes":["cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/?id.343417","name":"VDB-343417 | Tenda AC21 mDMZSetCfg command injection","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.343417","name":"VDB-343417 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.740871","name":"Submit #740871 | Tenda AC21 V16.03.08.16 Command Injection","tags":["third-party-advisory"]},{"url":"https://github.com/LX-LX88/cve/issues/26","tags":["broken-link","exploit","issue-tracking"]},{"url":"https://www.tenda.com.cn/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":6.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":6.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-77","type":"CWE","lang":"en","description":"Command Injection"}]},{"descriptions":[{"cweId":"CWE-74","type":"CWE","lang":"en","description":"Injection"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-02-23T09:08:03.393Z"},"timeline":[{"time":"2026-01-29T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-01-29T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-05T05:52:10.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"LX-LX (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-30T18:25:39.642410Z","id":"CVE-2026-1638","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-30T18:25:59.761Z"}}]}}}