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Critical

Security advisory

Type: advisorySources: OSVCVE: CVE-2016-7124

ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objects, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that leads to a (1) __destruct call or (2) magic method call.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2016-7124
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 12:11 UTC · Revision 1

Source evidence

CVE-2016-7124

core-osv · Original source

Published 12 Sept 2016, 01:59 UTC

ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objects, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that leads to a (1) __destruct call or (2) magic method call.

osv:CVE-2016-7124
Complete source record
{
  "id": "79e8c2ea94382fd8d4d9778d37de279b976635fed31d627648a64cd300dd8270",
  "url": "https://osv.dev/vulnerability/CVE-2016-7124",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-7124",
    "summary": "ext/standard/var_unserializer.c in PHP before 5.6.25 and 7.x before 7.0.10 mishandles certain invalid objects, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that leads to a (1) __destruct call or (2) magic method call.",
    "evidence": "osv:CVE-2016-7124",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2016-7124",
      "aliases": [
        "CVE-2016-7124"
      ],
      "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/php/php-src",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "38980c9ea4156ce52a53f9f3e1007ea3d787fa11"
                },
                {
                  "introduced": "60fffd296abce5fc071f3c173c25a2696cf683c6"
                },
                {
                  "last_affected": "9d582eba7448f1495fae62b13d95d2844ce6b28a"
                },
                {
                  "fixed": "20ce2fe8e3c211a42fee05a461a5881be9a8790e"
                }
              ],
              "database_specific": {
                "extracted_events": [
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                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "5.6.24"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.0"
                      },
                      {
                        "last_affected": "7.0.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.1"
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                      {
                        "last_affected": "7.0.1"
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                    "source": "CPE_STRING"
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                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.2"
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                      {
                        "last_affected": "7.0.2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.3"
                      },
                      {
                        "last_affected": "7.0.3"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.4"
                      },
                      {
                        "last_affected": "7.0.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.5"
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                      {
                        "last_affected": "7.0.5"
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                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.6:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.6"
                      },
                      {
                        "last_affected": "7.0.6"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.7:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.7"
                      },
                      {
                        "last_affected": "7.0.7"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.8:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.8"
                      },
                      {
                        "last_affected": "7.0.8"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:7.0.9:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.0.9"
                      },
                      {
                        "last_affected": "7.0.9"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "20ce2fe8e3c211a42fee05a461a5881be9a8790e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "7.0.0",
            "7.0.1",
            "7.0.2",
            "7.0.3",
            "7.0.4",
            "7.0.5",
            "7.0.6",
            "7.0.7",
            "7.0.8",
            "7.0.9",
            "php-7.0.10RC1",
            "php-5.6.24",
            "php-5.6.24RC1",
            "php-7.0.9",
            "php-7.0.9RC1",
            "POST_PHP7_NSAPI_REMOVAL",
            "PRE_PHP7_NSAPI_REMOVAL",
            "PRE_PHP7_EREG_MYSQL_REMOVALS",
            "PRE_PHP7_REMOVALS",
            "POST_PHP7_REMOVALS",
            "POST_AST_MERGE",
            "PRE_AST_MERGE",
            "POST_64BIT_BRANCH_MERGE",
            "PRE_64BIT_BRANCH_MERGE",
            "POST_PHPNG_MERGE"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7124.json",
            "vanir_signatures": [
              {
                "id": "CVE-2016-7124-130dd5fc",
                "digest": {
                  "threshold": 0.9,
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                "target": {
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              {
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                "digest": {
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                "source": "https://github.com/php/php-src/commit/20ce2fe8e3c211a42fee05a461a5881be9a8790e",
                "target": {
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                  "function": "php_var_unserialize_internal"
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                "signature_type": "Function",
                "signature_version": "v1"
              }
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            "vanir_signatures_modified": "2026-10-20T13:17:30Z"
          }
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      ],
      "modified": "2026-10-20T13:17:30.078364667Z",
      "provider": "osv",
      "references": [
        "https://www.tenable.com/security/tns-2016-19",
        "https://security.gentoo.org/glsa/201611-22",
        "https://bugs.php.net/bug.php?id=72663",
        "https://github.com/php/php-src/commit/20ce2fe8e3c211a42fee05a461a5881be9a8790e?w=1"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-7124",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387461,
  "published_at": "2016-09-12T01:59:02.287+00:00"
}