{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "21c0438b73c7a22f8c7b08d0ff5ac8a5e1e21a97"
            }
          ],
          "repo": "https://github.com/freertos/freertos-plus-tcp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-5x4f-fvv8-wr65"
  ],
  "details": "We have identified a buffer overflow issue allowing out-of-bounds write when processing LLMNR or mDNS queries with very long DNS names. This issue only affects systems using Buffer Allocation Scheme 1 with LLMNR or mDNS enabled.\n\n\nUsers should upgrade to the latest version and ensure any forked or derivative code is patched to incorporate the new fixes.",
  "id": "CVE-2025-5688",
  "modified": "2026-04-01T23:10:17.287417040Z",
  "published": "2025-06-04T17:15:29.330Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://aws.amazon.com/security/security-bulletins/AWS-2025-012/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/releases/tag/V4.3.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP/security/advisories/GHSA-5x4f-fvv8-wr65"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}