CVE-2026-73542: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-mw8v-5vg6-vwx7
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CVSS 3.7
CWE-296
Published
Advisory Summary

CVE-2026-73542 is a MODERATE (CVSS 3.7) security vulnerability vulnerability (CWE-296: Improper Following of a Certificate's Chain of Trust) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not follow, or incorrectly follows, the chain of trust for a certificate back to a trusted root certificate.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-73542 at a Glance

CVE Identifier CVE-2026-73542
GHSA Identifier GHSA-mw8v-5vg6-vwx7
Severity MODERATE
CVSS v3.1 Base Score 3.7
CWE Classification CWE-296: Improper Following of a Certificate's Chain of Trust
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-73542

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-2026-73542, 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-296: Improper Following of a Certificate's Chain of Trust, where the product does not follow, or incorrectly follows, the chain of trust for a certificate back to a trusted root certificate. 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

Multiple SEIKO EPSON printers and scanners contain revoked root certificates. A man-in-the-middle attack may allow an attacker to obtain communication data transmitted by the product. As for the details of the affected products and versions, refer to the vendor's information.

References

NVD — CVE-2026-73542 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73542
jvn.jp/en/vu/jvnvu91609598 WEB
https://jvn.jp/en/vu/JVNVU91609598
Software Security Information SECURITY
https://www.epson.jp/news/info/a-security202608.htm

Frequently Asked Questions

What is CVE-2026-73542?
CVE-2026-73542 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-296: Improper Following of a Certificate's Chain of Trust.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-73542?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-73542?
CVE-2026-73542 has a CVSS v3.1 base score of 3.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-73542?
CVE-2026-73542 is classified under CWE-296: Improper Following of a Certificate's Chain of Trust (The product does not follow, or incorrectly follows, the chain of trust for a certificate back to a trusted root certificate.).
How can I check Maven dependencies for CVE-2026-73542?
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-mw8v-5vg6-vwx7",
  "modified" : "2026-08-20T06:32:27Z",
  "published" : "2026-08-20T06:32:27Z",
  "aliases" : [ "CVE-2026-73542" ],
  "details" : "Multiple SEIKO EPSON printers and scanners contain revoked root certificates. A man-in-the-middle attack may allow an attacker to obtain communication data transmitted by the product. As for the details of the affected products and versions, refer to the vendor's information.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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-2026-73542"
  }, {
    "type" : "WEB",
    "url" : "https://jvn.jp/en/vu/JVNVU91609598"
  }, {
    "type" : "WEB",
    "url" : "https://www.epson.jp/news/info/a-security202608.htm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-296" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T06:17:13Z"
  }
}