CVE-2025-59321

Status: DeferredCritical (9.8)—

CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4 contains a default TPM PCR policy that fails to consider the system boot state. This allows the TPM to be unsealed via an unintended execution path or from another hardware platform.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base score: 9.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.78%
Percentile among all scored CVEs: 54
Score date: 10/5/2026

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).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1190 Exploit Public-Facing Applicationinitial access75 %

Vector AV:N/PR:N/UI:N indica red sin autenticación prevía (T1190). El fallo en la política TPM PCR permite acceso no autorizado a secretos almacenados (T1552.005: credenciales en sistema). Riesgo secundario de manipulación de arranque/integridad del sistema (T1578.004).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Filter Network Traffic Application Isolation and Sandboxing

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Cpsd — Cryptopro Secure Disk FOR Bitlocker^AI

CWEs

CWE-1188

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2025-59321",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-59321",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-13T15:41:22.773507Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-12T15:17:29.947",
  "references": [
    {
      "url": "https://i.blackhat.com/BH-USA-26/Presentations/US-26-Burch-The-Cost-of-Obscurity-Wednesday.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://i.blackhat.com/BH-USA-26/Presentations/US-26-Burch-The-Cost-of-Obscurity-wp.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.cpsd.at/blog/",
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1188"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "CPSD CryptoPro Secure Disk for Bitlocker before v7.7.4 contains a default TPM PCR policy that fails to consider the system boot state. This allows the TPM to be unsealed via an unintended execution path or from another hardware platform."
    },
    {
      "lang": "es",
      "value": "CPSD CryptoPro Secure Disk for Bitlocker anterior a la v7.7.4 contiene una política de PCR de TPM predeterminada que no tiene en cuenta el estado de arranque del sistema. Esto permite que el TPM sea desprecintado a través de una ruta de ejecución no intencionada o desde otra plataforma de hardware."
    }
  ],
  "lastModified": "2026-09-29T11:10:00.150",
  "sourceIdentifier": "cve@mitre.org"
}