CVE-2025-59696Public exploit

Tamper-event manipulation via unencrypted I2C log

Published Dec 2, 2025 · Updated Aug 26, 2026

Tamper-log failure in Entrust nShield Connect XC, 5c, and HSMi 13.6.11 and earlier or 13.7 allows physically proximate attackers to alter events. The Chassis management board stores tamper events unencrypted in an I2C EEPROM, allowing board-root or direct hardware access to edit or erase entries. Exploitation requires hands-on appliance access or root access on the board; the embedded HSM and its cryptographic keys remain unaffected.

CVSS severity3.2
Low
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Tamper-log failure in Entrust nShield Connect XC, 5c, and HSMi 13.6.11 and earlier or 13.7 allows physically proximate attackers to alter events. The Chassis management board stores tamper events unencrypted in an I2C EEPROM, allowing board-root or direct hardware access to edit or erase entries. Exploitation requires hands-on appliance access or root access on the board; the embedded HSM and its cryptographic keys remain unaffected.

The record

CVE
CVE-2025-59696
Published
Dec 2, 2025
Updated
Aug 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1263, T1565.001
Attack vector
physical
Privileges
Unavailable

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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.2CISA-ADPCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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.

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1263Improper Physical Access Control
T1565.001Stored Data Manipulation

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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