CVE-2026-9266: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2j43-x625-hw9q
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CWE-325
Published
Advisory Summary

CVE-2026-9266 is a HIGH security vulnerability vulnerability (CWE-325: Missing Cryptographic Step) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-9266 at a Glance

CVE Identifier CVE-2026-9266
GHSA Identifier GHSA-2j43-x625-hw9q
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-325: Missing Cryptographic Step
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-9266

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-9266, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-325: Missing Cryptographic Step, where the product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

References

NVD — CVE-2026-9266 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9266
Software Security Information SECURITY
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-266240-cve-2026-9266-missing-required-cryptographic-step-vulnerability-in-industrial-computers

Frequently Asked Questions

What is CVE-2026-9266?
CVE-2026-9266 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-325: Missing Cryptographic Step.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-9266?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-9266?
CVE-2026-9266 is classified under CWE-325: Missing Cryptographic Step (The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm.).
How can I check Maven dependencies for CVE-2026-9266?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2j43-x625-hw9q",
  "modified" : "2026-06-12T12:31:34Z",
  "published" : "2026-06-12T12:31:34Z",
  "aliases" : [ "CVE-2026-9266" ],
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9266"
  }, {
    "type" : "WEB",
    "url" : "https://www.moxa.com/en/support/product-support/security-advisory/mpsa-266240-cve-2026-9266-missing-required-cryptographic-step-vulnerability-in-industrial-computers"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-325" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-12T11:16:23Z"
  }
}