What is the CVSS score of CVE-2025-59695?

CVE-2025-59695 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Nshield Connect Xc Base Firmware are affected by CVE-2025-59695?

A critical vulnerability in Entrust nShield hardware security modules allows authenticated OS-level users to compromise the device's firmware without additional authentication, potentially enabling…

Is there a public PoC exploit available for CVE-2025-59695?

Yes, a public proof-of-concept exploit is available for CVE-2025-59695. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-59695?

Within 24 hours: Inventory all affected nShield Connect XC, nShield 5c, and nShield HSMi devices running versions through 13.6.11 or 13.7 and assess OS access controls. Within 7 days: Implement strict OS-level access restrictions, disable unnecessary root access, and enable comprehensive audit logging of all administrative activities on HSM host systems. Within 30 days: Contact Entrust for patch availability timelines and develop a phased upgrade strategy; consider deploying additional compensating controls such as hardware-based access restrictions and network isolation.

Nshield Connect Xc Base Firmware CVE-2025-59695

EUVD-2025-200259 CRITICAL

Missing Authentication for Critical Function (CWE-306)

2025-12-02 cve@mitre.org

Authentication Bypass Nshield Connect Xc Base Firmware Nshield Connect Xc Mid Firmware Nshield 5c Firmware Nshield Hsmi Firmware Nshield Connect Xc High Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 14:04 euvd

EUVD-2025-200259

Analysis Generated

Mar 15, 2026 - 14:04 vuln.today

PoC Detected

Dec 15, 2025 - 13:35 vuln.today

Public exploit code

CVE Published

Dec 02, 2025 - 15:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7, allow a user with OS root access to alter firmware on the Chassis Management Board (without Authentication). This is called F04.

Analysis

Technical ContextAI

An authentication bypass vulnerability allows attackers to circumvent login mechanisms and gain unauthorized access without valid credentials. This vulnerability is classified as Missing Authentication for Critical Function (CWE-306).

RemediationAI

Implement robust authentication mechanisms. Use multi-factor authentication. Review authentication logic for bypass conditions. Remove default credentials.

CVE-2025-59695 vulnerability details – vuln.today

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Nshield Connect Xc Base Firmware CVE-2025-59695

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

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External POC / Exploit Code