CVE-2025-59694: Entrust Nshield 5c Firmware

Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Entrust Nshield 5c Firmware: before 13.6.12 (fixed in 13.6.12); from 13.7.3, 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 13.7.3, 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 13.7.3, 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 13.7.3, before 13.9.0 (fixed in 13.9.0)
• Entrust Nshield Hsmi Firmware: before 13.6.12 (fixed in 13.6.12); from 13.7.3, before 13.9.0 (fixed in 13.9.0)

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