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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-9266 Detail

Description

A Missing Required Cryptographic Step vulnerability has been identified in Moxa's embedded Linux firmware for industrial computers and controllers. This vulnerability represents an incomplete remediation of CVE-2026-0714. The firmware introduced TPM2 parameter encryption as a countermeasure against CVE-2026-0714. However, an omission in the authorization session configuration causes the parameter encryption to provide no effective protection. An attacker with invasive physical access to the device can still capture TPM communications on the SPI bus and derive the LUKS disk encryption key in plaintext. While successful exploitation results in full compromise of the encrypted disk volume, the attack requires invasive physical access, including opening the device and attaching external equipment to the SPI bus. Remote exploitation is not possible, and the attack does not affect any downstream systems.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Moxa Inc.
CVSS-B 7.0 HIGH
Vector:  CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-266240-cve-2026-9266-missing-required-cryptographic-step-vulnerability-in-industrial-computers Moxa Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-325 Missing Cryptographic Step Moxa Inc.  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-9266
NVD Published Date:
06/12/2026
NVD Last Modified:
06/17/2026
Source:
Moxa Inc.