What’s Vulnerable › Vulnerabilities

CVE-2025-59699

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-12-02 · updated 2026-08-26
• Weakness: CWE-290

Description

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)), allow a physically proximate attacker to escalate privileges by booting from a USB device with a valid root filesystem. This occurs because of insecure default settings in the Legacy GRUB Bootloader.

Affected products

• Entrust Nshield 5C Firmware: before 13.6.12; from 13.7 before 13.9.0 — fixed in 13.6.12, 13.9.0
• Entrust Nshield Connect Xc Base Firmware: before 13.6.12; from 13.7 before 13.9.0 — fixed in 13.6.12, 13.9.0
• Entrust Nshield Connect Xc High Firmware: before 13.6.12; from 13.7 before 13.9.0 — fixed in 13.6.12, 13.9.0
• Entrust Nshield Connect Xc Mid Firmware: before 13.6.12; from 13.7 before 13.9.0 — fixed in 13.6.12, 13.9.0
• Entrust Nshield Hsmi Firmware: before 13.6.12; from 13.7 before 13.9.0 — fixed in 13.6.12, 13.9.0

How to fix

Upgrade to a fixed version: Entrust Nshield 5C Firmware 13.6.12, 13.9.0; Entrust Nshield Connect Xc Base Firmware 13.6.12, 13.9.0; Entrust Nshield Connect Xc High Firmware 13.6.12, 13.9.0; Entrust Nshield Connect Xc Mid Firmware 13.6.12, 13.9.0; Entrust Nshield Hsmi Firmware 13.6.12, 13.9.0. Check the vendor advisory for mitigations.

References

• https://github.com/advisories/GHSA-g9v7-h8x8-w5vw
• https://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj
• https://www.entrust.com/knowledgebase/hardware/understanding-nshield-security-advisory-september-2025
• https://www.entrust.com/use-case/why-use-an-hsm

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