.17 and earlier allow remote attackers to bypass security restrictions via certain IP source routed packets that should normally be denied using the \ NIST National Vulnerability Database (NVD) -- services.nvd.nist.gov (CVE / CVSS / CPE). {"cve":{"id":"CVE-1999-1216","sourceIdentifier":"cve@mitre.org","published":"1993-04-22T04:00:00.000","lastModified":"2026-06-16T21:49:57.987","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Cisco routers 9.17 and earlier allow remote attackers to bypass security restrictions via certain IP source routed packets that should normally be denied using the \"no ip source-route\" command."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":true,"userInteractionRequired":false}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-Other"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:h:cisco:router:*:*:*:*:*:*:*:*","versionEndIncluding":"9.17","matchCriteriaId":"990D0766-8FDF-43A0-B46C-09F2E75B4760"},{"vulnerable":true,"criteria":"cpe:2.3:h:cisco:router:8.2:*:*:*:*:*:*:*","matchCriteriaId":"70C8F944-01A5-45E8-B963-E68B85F86165"},{"vulnerable":true,"criteria":"cpe:2.3:h:cisco:router:8.3:*:*:*:*:*:*:*","matchCriteriaId":"DE7D0623-0F18-4486-B4DF-B49635A70EDF"},{"vulnerable":true,"criteria":"cpe:2.3:h:cisco:router:9.0:*:*:*:*:*:*:*","matchCriteriaId":"9EA7D7D0-B445-4F24-A86E-569291EA2456"},{"vulnerable":true,"criteria":"cpe:2.3:h:cisco:router:9.1:*:*:*:*:*:*:*","matchCriteriaId":"27604364-99CA-4942-ABCD-8F2B4CB20092"}]}]}],"references":[{"url":"http://ciac.llnl.gov/ciac/bulletins/d-15.shtml","source":"cve@mitre.org","tags":["Patch","Vendor Advisory"]},{"url":"http://www.cert.org/advisories/CA-1993-07.html","source":"cve@mitre.org","tags":["Patch","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/541","source":"cve@mitre.org"},{"url":"http://ciac.llnl.gov/ciac/bulletins/d-15.shtml","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]},{"url":"http://www.cert.org/advisories/CA-1993-07.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory","US Government Resource"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/541","source":"af854a3a-2127-422b-91ae-364da2661108"}]}},