CVE-2025-59703: Entrust Nshield 5c Firmware

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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 access the internal components of the appliance, without leaving tamper evidence. To exploit this, the attacker needs to remove the tamper label and all fixing screws from the device without damaging it. This is called an F14 attack.

Affected products

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

Published 2025-12-02. Last modified 2026-08-26.