{
  "id": "CVE-2026-45447",
  "url": "https://spydr.io/cve/CVE-2026-45447",
  "published": "2026-06-09T17:17:19.277Z",
  "modified": "2026-09-18T13:18:26.343Z",
  "score": 8.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "CISA ADP",
  "epss": 0.04002,
  "epss_percentile": 0.90239,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": "none",
  "vendors": [
    "OpenSSL",
    "Red Hat"
  ],
  "products": [
    "OpenSSL",
    "Red Hat Enterprise Linux 10",
    "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION",
    "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "Red Hat Enterprise Linux 8",
    "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
    "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
    "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
    "Red Hat Enterprise Linux 9",
    "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
    "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
    "Red Hat Enterprise Linux 9.6 Extended Update Support",
    "Red Hat OpenShift Container Platform 4.12",
    "Red Hat Cost Management 4",
    "Red Hat multicluster engine for Kubernetes 2.8",
    "Red Hat Advanced Cluster Management for Kubernetes 2.13",
    "Red Hat Discovery 2",
    "Red Hat Insights proxy 1.5",
    "Red Hat Update Infrastructure 5",
    "Red Hat Multicluster Engine for Kubernetes"
  ],
  "cwes": [
    "CWE-416",
    "CWE-825"
  ],
  "description": "Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition. In the common case this occurs when the application later calls BIO_free() on the BIO originally passed to PKCS7_verify(). Depending on allocator behavior and application-specific BIO usage patterns, this may result in a crash or other memory corruption. In some application contexts this may potentially be exploitable for remote code execution. Applications that process PKCS#7 or S/MIME signed messages using OpenSSL PKCS#7 APIs may be affected. Applications using the CMS APIs for this processing are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.",
  "status": "Modified",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 8.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://github.com/openssl/openssl/commit/3aad5eb7af4de4ee0633c30a8541a54d9bbde63c",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/openssl/openssl/commit/7d4a980c62258c5910cc883936e0c8dbab4d75a8",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/openssl/openssl/commit/9dfd688ad2290fc5075cacbc9bf0c9a93eefed54",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/openssl/openssl/commit/a541ae8bfe849a30cc885e8780715c0f488e496c",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/openssl/openssl/commit/c505d7559da5d5f9f2c3913c6883a5562ce7273e",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://openssl-library.org/news/secadv/20260609.txt",
      "tags": [
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:25237",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:25239",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:26275",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:26319",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:29197",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:34102",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:35869",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:36215",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:36217",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:39009",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:39012",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:39981",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:44438",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:47735",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:47737",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:58563",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:58981",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:59831",
      "tags": []
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:66524",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45447",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}