{"id":"CVE-2021-42912","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-42912","generatedAt":"2026-11-05T00:48:29.981Z","title":"FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability.","description":"FiberHome ONU GPON AN5506-04-F RP2617 is affected by an OS command injection vulnerability. This vulnerability allows the attacker, once logged in, to send commands to the operating system as the root user via the ping diagnostic tool, bypassing the IP address field, and concatenating OS commands with a semicolon.","published":"2021-12-16T17:15:08.000Z","lastModified":"2026-07-09T01:17:07.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["fiberhome/an5506-01-a firmware","fiberhome/an5506-01-b firmware","fiberhome/an5506-02-b firmware","fiberhome/an5506-04-b firmware","fiberhome/an5506-04-f firmware","fiberhome/aan5506-04-g2g firmware"],"epss":{"score":0.10085,"percentile":0.95641,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 10.1%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://medium.com/@windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2","source":"cve@mitre.org"},{"url":"https://medium.com/%40windsormoreira/fiberhome-an5506-os-command-injection-cve-2021-42912-10b64fd10ce2","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-42912","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."}