What is CVE-2025-59695?

CVE-2025-59695 is a critical-severity vulnerability in Entrust Nshield 5c, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2025-12-02.

How severe is CVE-2025-59695?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Entrust Nshield 5c

CVE-2025-59695

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 user with OS root access to alter firmware on the Chassis Management Board (without Authentication). This is called F04.

Vulnerability class: Broken Authentication

Published 2025-12-02 · last modified 2026-08-26.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.1th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

www.entrust.com/use-case/why-use-an-hsm (Product)
github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj (Exploit, Third Party Advisory)
www.entrust.com/knowledgebase/hardware/understanding-nshield-security-advisory-…
github.com/advisories/GHSA-w5fv-rcj5-pmj9

Frequently asked questions

What is CVE-2025-59695?: CVE-2025-59695 is a critical-severity vulnerability in Entrust Nshield 5c, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2025-12-02.
How severe is CVE-2025-59695?: Critical severity. CVSS v3 base score is 9.8 out of 10.