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🛡️ CVE-2025-59703 — nshield-5c-firmware

🔴 CVSS 9.1 — Critical ⚠️ Exploit Public CWE-284 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7, allow a Physically Proximate Attacker to access the internal components of the appliance, without leaving tamper evidence. To exploit this, the attacker needs to remove the tamper label and all fixing screws from the device without damaging it. This is called an F14 attack.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: None.

Weakness class

CVE-2025-59703 is classified as CWE-284: Improper Access Control. The software does not restrict an action to the actors that should be allowed to perform it.

Affected software

CVE-2025-59703 is recorded against 5 packages.

  • nshield-5c-firmware (from 13.7 up to 13.9.0)
  • nshield-connect-xc-base-firmware (from 13.7 up to 13.9.0)
  • nshield-connect-xc-high-firmware (from 13.7 up to 13.9.0)
  • nshield-connect-xc-mid-firmware (from 13.7 up to 13.9.0)
  • nshield-hsmi-firmware (from 13.7 up to 13.9.0)

Timeline and source

Published on 2 December 2025 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

github.com
www.entrust.com

Other advisories for this package

nshield-5c-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-284: Improper Access Control) in other software:

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE CWE-284
Public Exploit ⚠️ Yes
Source NVD
Published 2025-12-02
Updated 2026-08-20
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
nshield-5c-firmware 13.7 13.9.0
nshield-connect-xc-base-firmware 13.7 13.9.0
nshield-connect-xc-high-firmware 13.7 13.9.0
nshield-connect-xc-mid-firmware 13.7 13.9.0
nshield-hsmi-firmware 13.7 13.9.0

Similar Threats

Exploit Protection

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CVE-2025-59703 carries CVSS 9.1 Critical rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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