{"id":"CVE-2021-30166","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-30166","generatedAt":"2026-10-27T21:20:17.076Z","title":"Remote attackers can perform a command Injection attack and execute arbitrary commands after logging in with the privileged permission.","description":"The NTP Server configuration function of the IP camera device is not verified with special parameters. Remote attackers can perform a command Injection attack and execute arbitrary commands after logging in with the privileged permission.","published":"2021-04-28T10:15:09.000Z","lastModified":"2026-06-17T03:49:47.000Z","status":"Modified","sourceIdentifier":"twcert@cert.org.tw","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["meritlilin/p2r8852e2 firmware","meritlilin/p2r8852e4 firmware","meritlilin/p2r6852e2 firmware","meritlilin/p2r6852e4 firmware","meritlilin/p2r6552e2 firmware","meritlilin/p2r6552e4 firmware","meritlilin/p2r6352ae2 firmware","meritlilin/p2r6352ae4 firmware","meritlilin/p2r3052ae2 firmware","meritlilin/p2g1052 firmware","meritlilin/p2r8822e2 firmware","meritlilin/p2r8822e4 firmware","meritlilin/p2r6822e2 firmware","meritlilin/p2r6822e4 firmware","meritlilin/p2r6522e2 firmware","meritlilin/p2r6522e4 firmware","meritlilin/p2r6322ae2 firmware","meritlilin/p2r6322ae4 firmware","meritlilin/p2r3022ae2 firmware","meritlilin/p2g1022 firmware","meritlilin/p2g1022x firmware","meritlilin/z2r8852ax firmware","meritlilin/z2r8152x-p firmware","meritlilin/z2r8152x2-p firmware","meritlilin/z2r8052ex25 firmware","meritlilin/z2r6552x firmware","meritlilin/z2r6452ax firmware","meritlilin/z2r6452ax-p firmware","meritlilin/z2r8822ax firmware","meritlilin/z2r8122x-p firmware","meritlilin/z2r8122x2-p firmware","meritlilin/z2r8022ex25 firmware","meritlilin/z2r6522x firmware","meritlilin/z2r6422ax firmware","meritlilin/z2r6422ax-p firmware","meritlilin/p3r6322e2 firmware","meritlilin/p3r6522e2 firmware","meritlilin/p3r8822e2 firmware","meritlilin/z3r6422x3 firmware","meritlilin/z3r6522x firmware","meritlilin/z3r8922x3 firmware"],"epss":{"score":0.03786,"percentile":0.89893,"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 (3.79%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e","tags":["Third Party Advisory"],"source":"twcert@cert.org.tw"},{"url":"https://www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388","tags":["Third Party Advisory"],"source":"twcert@cert.org.tw"},{"url":"https://www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf","tags":["Vendor Advisory"],"source":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-4676-391a5-1.html","tags":["Third Party Advisory"],"source":"twcert@cert.org.tw"},{"url":"https://gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.twcert.org.tw/tw/cp-132-4676-391a5-1.html","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-30166","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."}