CVE-2025-40307: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-9mhh-qxx8-wc58
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CVSS 7.8
Published
Advisory Summary

CVE-2025-40307 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2025-40307 at a Glance

CVE Identifier CVE-2025-40307
GHSA Identifier GHSA-9mhh-qxx8-wc58
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:U/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 Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-40307

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-2025-40307, 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 General Security Weakness. 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 the Linux kernel, the following vulnerability has been resolved: exfat: validate cluster allocation bits of the allocation bitmap syzbot created an exfat image with cluster bits not set for the allocation bitmap. exfat-fs reads and uses the allocation bitmap without checking this. The problem is that if the start cluster of the allocation bitmap is 6, cluster 6 can be allocated when creating a directory with mkdir. exfat zeros out this cluster in exfat_mkdir, which can delete existing entries. This can reallocate the allocated entries. In addition, the allocation bitmap is also zeroed out, so cluster 6 can be reallocated. This patch adds exfat_test_bitmap_range to validate that clusters used for the allocation bitmap are correctly marked as in-use.

References

NVD — CVE-2025-40307 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-40307
git.kernel.org/stable/c/13c1d24803... WEB
https://git.kernel.org/stable/c/13c1d24803d5b0446b3f6f0fdd67e07ac1fdc7bf
git.kernel.org/stable/c/67ce8034dc... WEB
https://git.kernel.org/stable/c/67ce8034dc0278ddd88cad93d4218a945180dddd
git.kernel.org/stable/c/6bc58b4c53... WEB
https://git.kernel.org/stable/c/6bc58b4c53795ab5fe00648344aa7d9d61175f90
git.kernel.org/stable/c/79c1587b6c... WEB
https://git.kernel.org/stable/c/79c1587b6cda74deb0c86fc7ba194b92958c793c
git.kernel.org/stable/c/87f827d53b... WEB
https://git.kernel.org/stable/c/87f827d53bd0688597bda63ae95908e2ad39bac0

Frequently Asked Questions

What is CVE-2025-40307?
CVE-2025-40307 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2025-40307?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2025-40307?
CVE-2025-40307 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2025-40307?
CVE-2025-40307 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2025-40307?
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-9mhh-qxx8-wc58",
  "modified" : "2026-08-19T18:31:57Z",
  "published" : "2025-12-08T03:31:01Z",
  "aliases" : [ "CVE-2025-40307" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: validate cluster allocation bits of the allocation bitmap\n\nsyzbot created an exfat image with cluster bits not set for the allocation\nbitmap. exfat-fs reads and uses the allocation bitmap without checking\nthis. The problem is that if the start cluster of the allocation bitmap\nis 6, cluster 6 can be allocated when creating a directory with mkdir.\nexfat zeros out this cluster in exfat_mkdir, which can delete existing\nentries. This can reallocate the allocated entries. In addition,\nthe allocation bitmap is also zeroed out, so cluster 6 can be reallocated.\nThis patch adds exfat_test_bitmap_range to validate that clusters used for\nthe allocation bitmap are correctly marked as in-use.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/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-2025-40307"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/13c1d24803d5b0446b3f6f0fdd67e07ac1fdc7bf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/67ce8034dc0278ddd88cad93d4218a945180dddd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6bc58b4c53795ab5fe00648344aa7d9d61175f90"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/79c1587b6cda74deb0c86fc7ba194b92958c793c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/87f827d53bd0688597bda63ae95908e2ad39bac0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2025-12-08T01:16:02Z"
  }
}