CVE-2025-21762: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3vhc-4mgh-2vvp
Share
CVSS 7.8
CWE-416
Published
Advisory Summary

CVE-2025-21762 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-416: Use After Free) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.. Remediation is available in the latest vendor maintenance releases.

CVE-2025-21762 at a Glance

CVE Identifier CVE-2025-21762
GHSA Identifier GHSA-3vhc-4mgh-2vvp
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-416: Use After Free
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-2025-21762

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-2025-21762, 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-416: Use After Free, where the product reuses or references memory after it has been freed. at some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. 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: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.

References

NVD — CVE-2025-21762 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-21762
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-265688.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-503939.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/01d1b5c9ab... WEB
https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe
git.kernel.org/stable/c/10f555e3f5... WEB
https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3
git.kernel.org/stable/c/2c331718d3... WEB
https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd
git.kernel.org/stable/c/307cd1e2d3... WEB
https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431
git.kernel.org/stable/c/a42b69f692... WEB
https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44
git.kernel.org/stable/c/d9366ac2f9... WEB
https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a
git.kernel.org/stable/c/e9f4dee534... WEB
https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3
git.kernel.org/stable/c/f189654459... WEB
https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Frequently Asked Questions

What is CVE-2025-21762?
CVE-2025-21762 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-416: Use After Free.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2025-21762?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2025-21762?
CVE-2025-21762 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-2025-21762?
CVE-2025-21762 is classified under CWE-416: Use After Free (The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.).
How can I check Maven dependencies for CVE-2025-21762?
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-3vhc-4mgh-2vvp",
  "modified" : "2026-10-15T03:34:35Z",
  "published" : "2025-02-27T03:34:05Z",
  "aliases" : [ "CVE-2025-21762" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\narp: use RCU protection in arp_xmit()\n\narp_xmit() can be called without RTNL or RCU protection.\n\nUse RCU protection to avoid potential UAF.",
  "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-2025-21762"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-503939.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2025-02-27T03:15:16Z"
  }
}