CVE-2007-5502

Status: ModifiedMedium (6.4)—

The PRNG implementation for the OpenSSL FIPS Object Module 1.1.1 does not perform auto-seeding during the FIPS self-test, which generates random data that is more predictable than expected and makes it easier for attackers to bypass protection mechanisms that rely on the randomness.

CVSS

Version: 2.0
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N
Base score: 6.4

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 2.31%
Percentile among all scored CVEs: 83
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Openssl — Fips Object Module

CWEs

CWE-310

References

Raw JSON (NVD)

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{
  "id": "CVE-2007-5502",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-12-01T06:46:00.000",
  "references": [
    {
      "url": "http://secunia.com/advisories/27859",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/150249",
      "tags": [
        "US Government Resource"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.openssl.org/news/secadv_20071129.txt",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securityfocus.com/bid/26652",
      "tags": [
        "Patch"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1019029",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/4044",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/38796",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://secunia.com/advisories/27859",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.kb.cert.org/vuls/id/150249",
      "tags": [
        "US Government Resource"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openssl.org/news/secadv_20071129.txt",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/26652",
      "tags": [
        "Patch"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securitytracker.com/id?1019029",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/4044",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/38796",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-310"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The PRNG implementation for the OpenSSL FIPS Object Module 1.1.1 does not perform auto-seeding during the FIPS self-test, which generates random data that is more predictable than expected and makes it easier for attackers to bypass protection mechanisms that rely on the randomness."
    },
    {
      "lang": "es",
      "value": "La implementación PRNG para OpenSSL FIPS Object Module 1.1.1 no realiza una selección previa automática de la semilla durante el test de FIPS que realiza a sí mismo. Esto genera información arbitraria que es más predecible de lo esperado y hace que, para los atacantes, sea más fácil vulnerar los mecanismos de protección basados en aleatoriedad."
    }
  ],
  "lastModified": "2026-06-16T22:46:17.007",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openssl:fips_object_module:1.1.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8FF77E62-FB77-4A67-B618-D71D0F5CD87F"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "vendorComments": [
    {
      "comment": "Not vulnerable. This vulnerability only affected the OpenSSL FIPS Object Module which is not enabled or used by OpenSSL in Red Hat Enterprise Linux 2.1, 3, 4, or 5.\n",
      "lastModified": "2007-12-03T00:00:00",
      "organization": "Red Hat"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}