HOMEVULNERABILITIESCVE-2025-59699
MEDIUM

CVE-2025-59699

CWE-290Published: December 2, 2025· Updated: Jun 17, 2026

6.8
CVSS v3.1

Official Description

Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7, allow a physically proximate attacker to escalate privileges by booting from a USB device with a valid root filesystem. This occurs because of insecure default settings in the Legacy GRUB Bootloader.

NVD Source

Technical Analysis

CVE-2025-59699 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorPhysical
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

entrust10 product(s)
nshield 5c firmwarenshield 5cnshield hsmi firmwarenshield hsminshield connect xc base firmwarenshield connect xc basenshield connect xc mid firmwarenshield connect xc midnshield connect xc high firmwarenshield connect xc high
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwj

All References (2)

→
https://github.com/google/security-research/security/advisories/GHSA-6q4x-m86j-gfwjExploit · Third Party Advisory
→
https://www.entrust.com/use-case/why-use-an-hsmProduct

Quick Facts

CVE IDCVE-2025-59699
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-290
CISA KEVNo
Affected1 vendor(s)
PublishedDec 2, 2025

Related CVEs (CWE-290)

CVE-2026-6213
10.0
CVE-2020-5415
10.0
CVE-2026-39858
10.0
CVE-2025-34063
10.0
CVE-2026-54782
10.0
CVE-2018-25318
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-59699 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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