---
id: CVE-2025-59694
title: >-
  The Chassis Management Board in Entrust nShield Connect XC, nShield 5c, and
  nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0
  (STS)), allows a physically proximate attacker to persistently modify firmware
  and inf…
summary: >-
  The Chassis Management Board in Entrust nShield Connect XC, nShield 5c, and
  nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0
  (STS)), allows a physically proximate attacker to persistently modify firmware
  and inf…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-1274
vendor: entrust
product: nshield_5c_firmware
affected:
  - nshield_5c_firmware < 13.6.12
  - 'nshield_5c_firmware >= 13.7.3, < 13.9.0'
  - nshield_hsmi_firmware < 13.6.12
  - 'nshield_hsmi_firmware >= 13.7.3, < 13.9.0'
  - nshield_connect_xc_base_firmware < 13.6.12
  - 'nshield_connect_xc_base_firmware >= 13.7.3, < 13.9.0'
  - nshield_connect_xc_mid_firmware < 13.6.12
  - 'nshield_connect_xc_mid_firmware >= 13.7.3, < 13.9.0'
  - nshield_connect_xc_high_firmware < 13.6.12
  - 'nshield_connect_xc_high_firmware >= 13.7.3, < 13.9.0'
patched:
  - nshield_5c_firmware 13.9.0
  - nshield_hsmi_firmware 13.9.0
  - nshield_connect_xc_base_firmware 13.9.0
  - nshield_connect_xc_mid_firmware 13.9.0
  - nshield_connect_xc_high_firmware 13.9.0
published: '2025-12-02'
updated: '2026-08-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-59694'
references:
  - url: 'https://github.com/advisories/GHSA-7gqq-6vwr-4g3v'
    label: cve@mitre.org
  - url: >-
      https://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj
    label: cve@mitre.org
  - url: >-
      https://www.entrust.com/knowledgebase/hardware/understanding-nshield-security-advisory-september-2025
    label: cve@mitre.org
  - url: 'https://www.entrust.com/use-case/why-use-an-hsm'
    label: cve@mitre.org
  - url: >-
      https://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00317
epssPercentile: 0.21971
ingestedAt: '2026-08-26T16:46:29.925Z'
---

## Overview

The Chassis Management Board in Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 (STS)), allows a physically proximate attacker to persistently modify firmware and influence the (insecurely configured) appliance boot process. To exploit this, the attacker must modify the firmware via JTAG or perform an upgrade to the chassis management board firmware. This is called F03.

## Affected

- `nshield_5c_firmware < 13.6.12`
- `nshield_5c_firmware >= 13.7.3, < 13.9.0`
- `nshield_hsmi_firmware < 13.6.12`
- `nshield_hsmi_firmware >= 13.7.3, < 13.9.0`
- `nshield_connect_xc_base_firmware < 13.6.12`
- `nshield_connect_xc_base_firmware >= 13.7.3, < 13.9.0`
- `nshield_connect_xc_mid_firmware < 13.6.12`
- `nshield_connect_xc_mid_firmware >= 13.7.3, < 13.9.0`
- `nshield_connect_xc_high_firmware < 13.6.12`
- `nshield_connect_xc_high_firmware >= 13.7.3, < 13.9.0`

## Remediation

Upgrade past the affected range:

- `nshield_5c_firmware 13.9.0`
- `nshield_hsmi_firmware 13.9.0`
- `nshield_connect_xc_base_firmware 13.9.0`
- `nshield_connect_xc_mid_firmware 13.9.0`
- `nshield_connect_xc_high_firmware 13.9.0`