{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.2.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5fe10494e27be722d18c443dc70f851541e5d554"
            },
            {
              "fixed": "e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
            }
          ],
          "repo": "https://github.com/valvesoftware/gamenetworkingsockets",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "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.",
  "id": "CVE-2020-6017",
  "modified": "2026-03-13T21:47:24.248374776Z",
  "published": "2020-12-03T14:15:11.020Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43"
    },
    {
      "type": "EVIDENCE",
      "url": "https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}