{"id":"CVE-2020-16164","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-16164","generatedAt":"2026-10-27T20:22:30.538Z","title":"It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation \".roa\" files or X509 Certificate Revocation List files from the…","description":"An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation \".roa\" files or X509 Certificate Revocation List files from the RPKI relying party's view. NOTE: some third parties may regard this as a preferred behavior, not a vulnerability","published":"2020-07-30T16:15:12.000Z","lastModified":"2026-06-17T02:57:49.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H"},"cwe":["CWE-295"],"affected":["ripe/rpki validator 3"],"epss":{"score":0.00907,"percentile":0.59655,"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 (0.91%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/RIPE-NCC/rpki-validator-3/issues/158","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/RIPE-NCC/rpki-validator-3/issues/232","tags":["Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/RIPE-NCC/rpki-validator-3/security/advisories/GHSA-q76j-58cx-wp5v","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/RIPE-NCC/rpki-validator-3/issues/158","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/RIPE-NCC/rpki-validator-3/issues/232","tags":["Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/RIPE-NCC/rpki-validator-3/security/advisories/GHSA-q76j-58cx-wp5v","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-16164","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."}