CVE-2026-81579: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-gqq4-6ppr-52p5
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CVSS 8.8
CWE-123
Published
Advisory Summary

CVE-2026-81579 is a HIGH (CVSS 8.8) security vulnerability vulnerability (CWE-123: Write-what-where Condition) affecting Software libraries in the Maven ecosystem. The weakness occurs when any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-81579 at a Glance

CVE Identifier CVE-2026-81579
GHSA Identifier GHSA-gqq4-6ppr-52p5
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-123: Write-what-where Condition
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

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

How to Fix CVE-2026-81579

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-2026-81579, 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-123: Write-what-where Condition, where any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow. 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

In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system.

References

NVD — CVE-2026-81579 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81579
Software Release RELEASE
https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf

Frequently Asked Questions

What is CVE-2026-81579?
CVE-2026-81579 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-123: Write-what-where Condition.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-81579?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-81579?
CVE-2026-81579 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2026-81579?
CVE-2026-81579 is classified under CWE-123: Write-what-where Condition (Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.).
How can I check Maven dependencies for CVE-2026-81579?
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-gqq4-6ppr-52p5",
  "modified" : "2026-08-27T12:30:26Z",
  "published" : "2026-08-27T12:30:26Z",
  "aliases" : [ "CVE-2026-81579" ],
  "details" : "In WibuKey for Windows before version 6.71, an untrusted pointer dereference in the WibuKey2_64.sys kernel driver for 64-bit Windows allows an attacker to exploit a write-what-where primitive, enabling local privilege escalation. This can be leveraged to execute arbitrary code, run an administrator shell, or gain full control over the system.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-81579"
  }, {
    "type" : "WEB",
    "url" : "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100031.pdf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-123" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-27T10:16:40Z"
  }
}