{"id":"CVE-2020-6017","aliases":["EUVD-2020-27171","GHSA-p7jj-vwwf-c644"],"status":"published","title":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable...","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","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":"2026-11-09","score":0.03234,"percentile":0.88364,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-787"],"published":"2020-12-03T13:34:00Z","modified":"2026-10-20T14:14:34Z","products":[{"vendor":"valvesoftware","product":"game_networking_sockets"}],"references":[{"url":"https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6017"},{"url":"https://github.com/advisories/GHSA-p7jj-vwwf-c644"}],"sources":{"cve":[{"id":"CVE-2020-6017","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","status":"published","published":"2020-12-03T13:34:00Z","modified":"2024-08-04T08:47:40.93Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:35:52.592504Z"}],"euvd":[{"id":"EUVD-2020-27171","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","status":"published","published":"2020-12-03T13:34:00Z","modified":"2024-08-04T08:47:40Z","updated_at":"2026-11-03T03:08:04.689205Z"}],"ghsa":[{"id":"GHSA-p7jj-vwwf-c644","title":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable...","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","status":"published","published":"2022-05-24T17:35:20Z","modified":"2023-01-29T05:04:54Z","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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:45:40.253766Z"}],"nvd":[{"id":"CVE-2020-6017","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","status":"published","published":"2020-12-03T14:15:11.02Z","modified":"2026-06-17T03:22:35.853Z","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-120","CWE-787"],"updated_at":"2026-11-02T14:06:25.394006Z"}],"osv":[{"id":"CVE-2020-6017","description":"Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.","status":"published","published":"2020-12-03T14:15:11.02Z","modified":"2026-10-20T14:14:34.447914353Z","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":"2026-11-02T15:44:16.936975Z"}]}}