{"id":"CVE-2018-17780","aliases":["DEBIAN-CVE-2018-17780","EUVD-2018-9527","GHSA-r3p8-5cf3-rwmg","UBUNTU-CVE-2018-17780"],"status":"published","title":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user...","description":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01803,"percentile":0.7868,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2018-09-29T19:00:00Z","modified":"2026-10-24T10:30:26Z","fixes":[{"ecosystem":"Debian:12","package":"telegram-desktop","fixed_in":["1.4.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"telegram-desktop","fixed_in":["1.4.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-1"}]}],"versions":["1.0.14-1","1.0.29-1","1.1.0-1","1.1.10-1","1.1.18-1","1.1.19-1","1.1.19-2","1.1.23-1","1.1.23-1~bpo9+1","1.1.23-2","1.1.23-3","1.2.1-1","1.2.1-2","1.2.15-1","1.2.17-1","1.2.6-1","1.2.6-2","1.3.10-1","1.3.10-2","1.3.14-1","1.3.7-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.23-1","1.1.23-1build1","1.1.23-2","1.1.23-3","1.2.6-1","1.2.6-2","1.2.6-2build1","1.2.6-2build2","1.2.6-2build3","1.2.15-1","1.2.15-1build1","1.2.17-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.8-1","1.8.15-2","1.9.8~slim-1","1.9.14+ds-1","1.9.14+ds-2","1.9.21+ds-1","2.0.1+ds-1","2.0.1+ds-1build1","2.1.7+ds-2~ubuntu20.04.1","3.1.1+ds-1~ubuntu20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"telegram-desktop","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.1+ds-1","3.5.2+ds-1","3.6.1+ds-2build1"]}],"products":[{"vendor":"telegram","product":"telegram_desktop"},{"vendor":"telegram","product":"telegram_messenger"}],"references":[{"url":"http://www.securityfocus.com/bid/105521","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://www.inputzero.io/2018/09/bug-bounty-telegram-cve-2018-17780.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-17780"},{"url":"https://github.com/advisories/GHSA-r3p8-5cf3-rwmg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-17780","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-17780","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-17780","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-17780","description":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.","status":"published","published":"2018-09-29T19:00:00Z","modified":"2024-08-05T10:54:10.574Z","updated_at":"2026-11-02T14:35:07.354449Z"}],"euvd":[{"id":"EUVD-2018-9527","description":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.","status":"published","published":"2018-09-29T19:00:00Z","modified":"2024-08-05T10:54:10Z","updated_at":"2026-11-03T02:39:37.709725Z"}],"ghsa":[{"id":"GHSA-r3p8-5cf3-rwmg","title":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user...","description":"Telegram Desktop (aka tdesktop) 1.3.14, and Telegram 3.3.0.0 WP8.1 on Windows, leaks end-user public and private IP addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My 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addresses during a call because of an unsafe default behavior in which P2P connections are accepted from clients outside of the My Contacts list.","status":"published","published":"2018-09-29T19:29:00Z","modified":"2025-10-24T04:47:13Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:17.496046Z"}]}}