{"id":"CVE-2018-25021","aliases":["DEBIAN-CVE-2018-25021","EUVD-2018-13802","GHSA-p3p2-9rqf-r8j8","UBUNTU-CVE-2018-25021"],"status":"published","title":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain...","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02342,"percentile":0.83756,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-404"],"published":"2021-12-13T00:53:52Z","modified":"2026-10-23T18:04:47Z","fixes":[{"ecosystem":"Debian:12","package":"libtoxcore","fixed_in":["0.2.8-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libtoxcore","fixed_in":["0.2.8-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libtoxcore","fixed_in":["0.2.8-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libtoxcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libtoxcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libtoxcore","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8-1"}]}]}],"products":[{"vendor":"toktok","product":"toxcore"}],"references":[{"url":"https://github.com/TokTok/c-toxcore/issues/1214","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://github.com/TokTok/c-toxcore/pull/1216","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-25021"},{"url":"https://github.com/advisories/GHSA-p3p2-9rqf-r8j8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-25021","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-25021","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-25021","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-25021","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-13T00:53:52Z","modified":"2024-08-05T12:26:39.493Z","updated_at":"2026-11-02T14:35:01.952568Z"}],"euvd":[{"id":"EUVD-2018-13802","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-13T00:53:52Z","modified":"2024-08-05T12:26:39Z","updated_at":"2026-11-03T02:39:27.400094Z"}],"ghsa":[{"id":"GHSA-p3p2-9rqf-r8j8","title":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain...","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-14T00:01:18Z","modified":"2023-02-01T05:06:46Z","cwes":["CWE-404"],"updated_at":"2026-11-02T14:50:25.046492Z"}],"nvd":[{"id":"CVE-2018-25021","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-13T01:15:07.533Z","modified":"2026-06-17T01:54:32.35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-404"],"updated_at":"2026-11-02T14:05:00.565712Z"}],"osv":[{"id":"CVE-2018-25021","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-13T01:15:07.533Z","modified":"2026-10-20T13:30:47.286290581Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:09.145458Z"},{"id":"DEBIAN-CVE-2018-25021","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"published","published":"2021-12-13T01:15:07.533Z","modified":"2026-10-23T18:04:47.437269893Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:30.867575Z"},{"id":"UBUNTU-CVE-2018-25021","description":"The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).","status":"withdrawn","published":"2021-12-13T01:15:00Z","modified":"2025-07-16T07:38:33.285401Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:17.91743Z"}]}}