{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.3.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "35ab210fb219029a7c388898d641915f869c2a36"
            }
          ],
          "repo": "https://github.com/armmbed/ualloc",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.",
  "id": "CVE-2021-27433",
  "modified": "2026-03-13T21:47:34.308100909Z",
  "published": "2022-05-03T21:15:08.570Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ARMmbed/mbed-os/pull/14408"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}