CVE-2025-59704Public exploit

Physical BIOS reconfiguration via missing administrator password

Published Dec 2, 2025 · Updated Aug 26, 2026

Improper authentication in Entrust nShield Connect XC, nShield 5c, and nShield HSMi allows physically proximate attackers to alter BIOS settings. The appliance BIOS grants Administrator setup access without a password, exposing EFI-shell boot, boot-drive, VT-d, and PCIe Option ROM settings. Physical access plus a USB port enabled during boot is required; affected releases include 13.6.11 and earlier and 13.7, while the embedded HSM and its keys remain inaccessible.

CVSS severity4.6
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Entrust nShield Connect XC, nShield 5c, and nShield HSMi allows physically proximate attackers to alter BIOS settings. The appliance BIOS grants Administrator setup access without a password, exposing EFI-shell boot, boot-drive, VT-d, and PCIe Option ROM settings. Physical access plus a USB port enabled during boot is required; affected releases include 13.6.11 and earlier and 13.7, while the embedded HSM and its keys remain inaccessible.

The record

CVE
CVE-2025-59704
Published
Dec 2, 2025
Updated
Aug 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1200Hardware Additions

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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