CVE-2026-18273: Software Security Vulnerability Vulnerability
MODERATECVE-2026-18273 is a MODERATE (CVSS 6.6) security vulnerability vulnerability (CWE-276: Incorrect Default Permissions) affecting Software libraries in the Maven ecosystem. The weakness occurs when during installation, installed file permissions are set to allow anyone to modify those files.. Remediation is available in the latest vendor maintenance releases.
CVE-2026-18273 at a Glance
Security Impact
CVSS: 6.6
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-18273
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.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-18273, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze 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-276: Incorrect Default Permissions, where during installation, installed file permissions are set to allow anyone to modify those files. 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
References
Frequently Asked Questions
What is CVE-2026-18273?
Which Software versions are affected?
What version fixes CVE-2026-18273?
What is the CVSS score of CVE-2026-18273?
What CWE is associated with CVE-2026-18273?
How can I check Maven dependencies for CVE-2026-18273?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-cf99-wgcf-8gw4",
"modified" : "2026-08-20T18:30:55Z",
"published" : "2026-08-20T18:30:55Z",
"aliases" : [ "CVE-2026-18273" ],
"details" : "Kenwood DNR1007XR USB Incorrect Default Permissions Local Privilege Escalation Vulnerability. This vulnerability allows physically present attackers to escalate privileges on affected installations of Kenwood DNR1007XR devices. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.\n\nThe specific flaw exists within the configuration of the mount point for the USB filesystem. The issue results from incorrect permissions on a directory used by the product. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-29070.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
} ],
"affected" : [ ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-18273"
}, {
"type" : "WEB",
"url" : "https://www.kenwood.com/cs/ce/mm/firmware/2020/2020f/eng.html"
}, {
"type" : "WEB",
"url" : "https://www.zerodayinitiative.com/advisories/ZDI-26-490"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-276" ],
"severity" : "MODERATE",
"github_reviewed" : false,
"github_reviewed_at" : null,
"nvd_published_at" : "2026-08-20T17:17:23Z"
}
}