---
id: CVE-2025-59693
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 obtain debug access and
  escalate pri…
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 obtain debug access and
  escalate pri…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
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-2025-59693'
references:
  - url: 'https://github.com/advisories/GHSA-j3px-xpp5-mpfc'
    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
tags:
  - nvd
epss: 0.00899
epssPercentile: 0.58151
ingestedAt: '2026-08-26T16:46:29.873Z'
---

## 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 obtain debug access and escalate privileges by bypassing the tamper label and opening the chassis without leaving evidence, and accessing the JTAG connector. This is called F02.

## 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`