High severity · published Dec 2, 2025
CVE-2025-59697
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…
7.2
CVSS
0.3%
EPSS
No
On KEV
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 editing the Legacy GRUB bootloader configuration to start a root shell upon boot of the host OS. This is called F06.
CVSS vector
CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% 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 before 13.9.0 · source: NVD
NC
Nshield Connect XC Base Firmware · Entrust
before 13.6.12; 13.7 before 13.9.0 · source: NVD
NC
Nshield Connect XC High Firmware · Entrust
before 13.6.12; 13.7 before 13.9.0 · source: NVD
NC
Nshield Connect XC Mid Firmware · Entrust
before 13.6.12; 13.7 before 13.9.0 · source: NVD
NH
Nshield Hsmi Firmware · Entrust
before 13.6.12; 13.7 before 13.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-59697
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-59697
github.com
https://github.com/advisories/GHSA-c2xm-xv33-q796
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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