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Critical severity · published Dec 2, 2025
CVE-2025-59693
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…
9.8
CVSS
0.9%
EPSS
No
On KEV
Description
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 obtain debug access and escalate privileges by bypassing the tamper label and opening the chassis without leaving evidence, and accessing the JTAG connector. This is called F02.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N5
Nshield 5c Firmware · Entrust
before 13.6.12; 13.7.3 before 13.9.0 · source: NVD
NC
Nshield Connect XC Base Firmware · Entrust
before 13.6.12; 13.7.3 before 13.9.0 · source: NVD
NC
Nshield Connect XC High Firmware · Entrust
before 13.6.12; 13.7.3 before 13.9.0 · source: NVD
NC
Nshield Connect XC Mid Firmware · Entrust
before 13.6.12; 13.7.3 before 13.9.0 · source: NVD
NH
Nshield Hsmi Firmware · Entrust
before 13.6.12; 13.7.3 before 13.9.0 · source: NVD
Affected product
N5
Nshield 5c Firmware
Entrust
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59693
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59693
github.com
https://github.com/advisories/GHSA-j3px-xpp5-mpfc
Exploit
https://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj
www.entrust.com
https://www.entrust.com/knowledgebase/hardware/understanding-nshield-security-advisory-september-2025
Product
https://www.entrust.com/use-case/why-use-an-hsm
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