Security advisory

{
  "id": "8c4213ae4c07677d40da8f56f91fe17aa22bb42e32535cea5de77f222a2f6b8f",
  "url": "https://osv.dev/vulnerability/CVE-2016-9953",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-9953",
    "summary": "The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.",
    "evidence": "osv:CVE-2016-9953",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2016-9953",
      "aliases": [
        "CURL-CVE-2016-9953",
        "CVE-2016-9953"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/curl/curl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "80d241046e404233537ff35efabb703a0668c7d5"
                },
                {
                  "last_affected": "3c561c657c2f0e553b19115a506592a8bbd744bc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.30.0"
                      },
                      {
                        "last_affected": "7.51.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "curl-7_51_0",
            "curl-7_50_3",
            "curl-7_50_2",
            "curl-7_50_1",
            "curl-7_50_0",
            "curl-7_49_1",
            "curl-7_49_0",
            "curl-7_48_0",
            "curl-7_47_1",
            "curl-7_47_0",
            "curl-7_46_0",
            "curl-7_45_0",
            "curl-7_44_0",
            "curl-7_43_0",
            "curl-7_42_0",
            "curl-7_41_0",
            "curl-7_40_0",
            "curl-7_39_0",
            "curl-7_38_0",
            "curl-7_37_1",
            "curl-7_37_0",
            "curl-7_36_0",
            "curl-7_35_0",
            "curl-7_34_0",
            "curl-7_33_0",
            "curl-7_32_0",
            "curl-7_31_0",
            "curl-7_30_0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-9953.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:17.447776722Z",
      "provider": "osv",
      "references": [
        "https://curl.haxx.se/CVE-2016-9952.patch",
        "https://curl.haxx.se/docs/adv_20161221C.html"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-9953",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429566,
  "published_at": "2018-03-12T21:29:00.563+00:00"
}