{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0-233"
              },
              {
                "fixed": "3.9.3.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "7ae50f4be245efd469dee2ce2855b6235b07aa42"
            },
            {
              "fixed": "9a75c88920274d37dfa4bb28b10189b706e85354"
            }
          ],
          "repo": "https://github.com/snort3/snort3",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP Decoder that could allow an unauthenticated, remote attacker to cause the disclosure of possible sensitive data or cause the Snort 3 Detection Engine to crash.\r\n\r\nThis vulnerability is due to an error in the logic of buffer handling when the MIME fields of the HTTP header are parsed. This can result in a buffer under-read. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to induce one of two possible outcomes: the unexpected restarting of the Snort 3 Detection Engine, which could cause a denial of service (DoS) condition, or information disclosure of sensitive information in the Snort 3 data stream. Due to the under-read condition, it is possible that sensitive information that is not valid connection data could be returned.",
  "id": "CVE-2025-20359",
  "modified": "2026-09-19T03:30:16.913376757Z",
  "published": "2025-10-15T17:15:49.230Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-mime-vulns-tTL8PgVH"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}