CVE intelligence and bounded remediation

CVE-2025-59697 — Entrust Nshield 5C Firmware security vulnerability

High CVSS 7.2

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.

Severity
High
CVSS
7.2 (3.1)
Published
2025-12-02
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-269, CWE-284

Affected products

  • entrust / nshield_5c_firmware
  • entrust / nshield_hsmi_firmware
  • entrust / nshield_connect_xc_base_firmware
  • entrust / nshield_connect_xc_mid_firmware
  • entrust / nshield_connect_xc_high_firmware

Showing 5 representative product identities from 10 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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