{"id":"CVE-2022-40740","url":"https://www.cyber-defence.io/tools/cve/CVE-2022-40740","generatedAt":"2026-10-27T17:38:54.853Z","title":"A remote attacker authenticated as an administrator can exploit this vulnerability to perform command injection attacks, to execute arbitrary system command, manipulate system or disrupt service.","description":"Realtek GPON router has insufficient filtering for special characters. A remote attacker authenticated as an administrator can exploit this vulnerability to perform command injection attacks, to execute arbitrary system command, manipulate system or disrupt service.","published":"2023-01-03T03:15:10.000Z","lastModified":"2026-06-17T05:01:58.000Z","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":["realtek/usdk","realtek/xpon software development kit"],"epss":{"score":0.01518,"percentile":0.74381,"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 (1.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-6831-19121-1.html","tags":["Third Party Advisory","VDB Entry"],"source":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-6831-19121-1.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-40740","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."}