{"id":"CVE-2016-5673","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-5673","generatedAt":"2026-10-27T19:44:02.243Z","title":"UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows remote attackers to obtain open-proxy functionality by using a :: substring in between the IP address and port number.","description":"UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows remote attackers to obtain open-proxy functionality by using a :: substring in between the IP address and port number.","published":"2016-08-25T21:59:03.000Z","lastModified":"2026-06-17T00:49:51.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-284"],"affected":["ultravnc/repeater"],"epss":{"score":0.01871,"percentile":0.79205,"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 (1.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.kb.cert.org/vuls/id/735416","tags":["Third Party Advisory","US Government Resource"],"source":"cret@cert.org"},{"url":"http://www.kb.cert.org/vuls/id/BLUU-A9WQVP","tags":["Third Party Advisory","US Government Resource"],"source":"cret@cert.org"},{"url":"http://www.securityfocus.com/bid/92348","source":"cret@cert.org"},{"url":"http://www.kb.cert.org/vuls/id/735416","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/BLUU-A9WQVP","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92348","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-5673","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."}