{"id":"CVE-2016-5673","aliases":["EUVD-2016-6617","GHSA-529m-7v26-xfh8"],"status":"published","title":"UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which...","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.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01871,"percentile":0.79482,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2016-08-25T21:00:00Z","modified":"2026-06-17T00:49:51Z","products":[{"vendor":"ultravnc","product":"repeater"}],"references":[{"url":"http://www.kb.cert.org/vuls/id/BLUU-A9WQVP","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"http://www.kb.cert.org/vuls/id/735416","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"http://www.securityfocus.com/bid/92348","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-5673"},{"url":"https://github.com/advisories/GHSA-529m-7v26-xfh8"}],"sources":{"cve":[{"id":"CVE-2016-5673","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.","status":"published","published":"2016-08-25T21:00:00Z","modified":"2024-08-06T01:07:59.944Z","updated_at":"2026-11-02T14:33:30.767029Z"}],"euvd":[{"id":"EUVD-2016-6617","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.","status":"published","published":"2016-08-25T21:00:00Z","modified":"2024-08-06T01:07:59Z","updated_at":"2026-11-03T02:22:42.442421Z"}],"ghsa":[{"id":"GHSA-529m-7v26-xfh8","title":"UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which...","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.","status":"published","published":"2022-05-17T03:40:28Z","modified":"2023-01-27T05:08:00Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:43:13.955662Z"}],"nvd":[{"id":"CVE-2016-5673","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.","status":"published","published":"2016-08-25T21:59:03.163Z","modified":"2026-06-17T00:49:51.06Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:03:28.854267Z"}]}}