What is the CVSS score of EUVD-2025-200257?

EUVD-2025-200257 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Nshield Connect Xc Base Firmware are affected by EUVD-2025-200257?

Entrust nShield hardware security modules (HSM) are vulnerable to local privilege escalation attacks by physically proximate attackers who can modify bootloader configurations.

Is there a public PoC exploit available for EUVD-2025-200257?

Yes, a public proof-of-concept exploit is available for EUVD-2025-200257. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate EUVD-2025-200257?

Within 24 hours: Inventory all nShield Connect XC, nShield 5c, and nShield HSMi devices running versions 13.6.11 or earlier, or 13.7, and assess physical access controls to HSM locations. Within 7 days: Implement strict physical security measures restricting access to HSM host systems and implement BIOS/firmware password protections where available. Within 30 days: Contact Entrust for patch availability timeline and deployment plan; evaluate alternative HSM vendors or architectural changes if patches remain unavailable for extended periods.

Nshield Connect Xc Base Firmware EUVD-2025-200257

| CVE-2025-59697 HIGH

Improper Privilege Management (CWE-269)

2025-12-02 cve@mitre.org

Privilege Escalation Nshield Connect Xc Base Firmware Nshield Connect Xc High Firmware Nshield 5c Firmware Nshield Hsmi Firmware Nshield Connect Xc Mid Firmware

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 14:04 euvd

EUVD-2025-200257

Analysis Generated

Mar 15, 2026 - 14:04 vuln.today

PoC Detected

Dec 08, 2025 - 19:31 vuln.today

Public exploit code

CVE Published

Dec 02, 2025 - 15:15 nvd

HIGH 7.2

DescriptionCVE.org

Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7, allow a physically proximate attacker to escalate privileges by editing the Legacy GRUB bootloader configuration to start a root shell upon boot of the host OS. This is called F06.

Analysis

Technical ContextAI

Privilege escalation allows a low-privileged user or process to gain elevated permissions beyond what was originally authorized. This vulnerability is classified as Improper Privilege Management (CWE-269).

RemediationAI

Apply the principle of least privilege. Keep systems patched. Monitor for suspicious privilege changes. Use mandatory access controls (SELinux, AppArmor).

EUVD-2025-200257 vulnerability details – vuln.today

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Nshield Connect Xc Base Firmware EUVD-2025-200257

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

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External POC / Exploit Code