CVE-2025-70521: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-rv2w-876m-ggq4
Share
CVSS 9.8
CWE-77
Published
Advisory Summary

CVE-2025-70521 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.. Remediation is available in the latest vendor maintenance releases.

CVE-2025-70521 at a Glance

CVE Identifier CVE-2025-70521
GHSA Identifier GHSA-rv2w-876m-ggq4
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2025-70521

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-2025-70521, 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-77: Improper Neutralization of Special Elements used in a Command ('Command Injection'), where the product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. 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

The management portal's diagnostic ping tool of Fanvil x7a firmware version 2.6.0.1182 does not handle user supplied input securely. The lack of secure user input handling allows any unauthenticated attacker to inject commands and run code in the underlying Android operating system.

References

NVD — CVE-2025-70521 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-70521
www.darkpoint.ca/blog/2026/02/27/fan... WEB
https://www.darkpoint.ca/blog/2026/02/27/Fanvil-x7a-PA2S-Vulnerability-Disclosure
www.fanvil.com/products/p5/wulianw... WEB
https://www.fanvil.com/products/p5/wulianwangwangguan_1/20210921/5035.html
download.fanvil.com/firmware/release/pa... WEB
http://download.fanvil.com/Firmware/Release/PA2S

Frequently Asked Questions

What is CVE-2025-70521?
CVE-2025-70521 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2025-70521?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2025-70521?
CVE-2025-70521 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2025-70521?
CVE-2025-70521 is classified under CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') (The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.).
How can I check Maven dependencies for CVE-2025-70521?
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-rv2w-876m-ggq4",
  "modified" : "2026-10-07T21:33:24Z",
  "published" : "2026-10-07T15:32:00Z",
  "aliases" : [ "CVE-2025-70521" ],
  "details" : "The management portal's diagnostic ping tool of Fanvil x7a firmware version 2.6.0.1182 does not handle user supplied input securely. The lack of secure user input handling allows any unauthenticated attacker to inject commands and run code in the underlying Android operating system.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-70521"
  }, {
    "type" : "WEB",
    "url" : "https://www.darkpoint.ca/blog/2026/02/27/Fanvil-x7a-PA2S-Vulnerability-Disclosure"
  }, {
    "type" : "WEB",
    "url" : "https://www.fanvil.com/products/p5/wulianwangwangguan_1/20210921/5035.html"
  }, {
    "type" : "WEB",
    "url" : "http://download.fanvil.com/Firmware/Release/PA2S"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-77" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-07T15:16:55Z"
  }
}