{"id":"CVE-2019-17067","aliases":["EUVD-2019-7538","GHSA-rfxx-g57q-7c3j","UBUNTU-CVE-2019-17067"],"status":"published","title":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows...","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01634,"percentile":0.76443,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-770"],"published":"2019-10-01T16:55:36Z","modified":"2026-10-17T12:55:25Z","affected":[{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.65-2","0.66-1","0.66-2","0.66-3","0.66-4","0.67-1","0.67-2","0.67-3build0.16.04.1","0.67-3+deb9u1build0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.70-1","0.70-2","0.70-3","0.70-4"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.72-1","0.73-1","0.73-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.75-3","0.76-1","0.76-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.78-3","0.79-1","0.80-1","0.80-1build2","0.80-1build3","0.81-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.83-2","0.83-3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.83-3build1","0.84-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.83-3","0.83-3build1"]}],"products":[{"vendor":"putty","product":"putty"}],"references":[{"url":"https://lists.tartarus.org/pipermail/putty-announce/2019/000029.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Third Party Advisory","report"]},{"url":"https://security.netapp.com/advisory/ntap-20191127-0003/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-17067"},{"url":"https://github.com/advisories/GHSA-rfxx-g57q-7c3j"},{"url":"https://ubuntu.com/security/CVE-2019-17067","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-17067","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-17067","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","status":"published","published":"2019-10-01T16:55:36Z","modified":"2024-08-05T01:33:16.719Z","updated_at":"2026-11-02T14:20:24.678649Z"}],"euvd":[{"id":"EUVD-2019-7538","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","status":"published","published":"2019-10-01T16:55:36Z","modified":"2024-08-05T01:33:16Z","updated_at":"2026-11-03T02:40:31.468839Z"}],"ghsa":[{"id":"GHSA-rfxx-g57q-7c3j","title":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows...","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","status":"published","published":"2022-05-24T16:57:31Z","modified":"2023-01-28T05:07:43Z","updated_at":"2026-11-02T14:44:34.06652Z"}],"nvd":[{"id":"CVE-2019-17067","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","status":"published","published":"2019-10-01T17:15:10.463Z","modified":"2026-06-17T02:23:15.34Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:05:30.039477Z"}],"osv":[{"id":"UBUNTU-CVE-2019-17067","description":"PuTTY before 0.73 on Windows improperly opens port-forwarding listening sockets, which allows attackers to listen on the same port to steal an incoming connection.","status":"published","published":"2019-10-01T17:15:00Z","modified":"2026-10-17T12:55:25.446856091Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:20.325378Z"}]}}