CVE-2025-68624: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-8wch-g3f4-9xpr
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CVSS 4.3
CWE-290
Published
Advisory Summary

CVE-2025-68624 is a MODERATE (CVSS 4.3) security vulnerability vulnerability (CWE-290: Authentication Bypass by Spoofing) affecting Software libraries in the Maven ecosystem. The weakness occurs when this attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.. Remediation is available in the latest vendor maintenance releases.

CVE-2025-68624 at a Glance

CVE Identifier CVE-2025-68624
GHSA Identifier GHSA-8wch-g3f4-9xpr
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-290: Authentication Bypass by Spoofing
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2025-68624

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-2025-68624, 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-290: Authentication Bypass by Spoofing, where this attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. 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

N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation. NOTE: N-able's position is that the behavior is intended functionality of its shared SMTP relay architecture and that the service does not represent that it enforces per-tenant sender-domain binding.

References

NVD — CVE-2025-68624 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-68624
deepsec.net/speaker.html WEB
https://deepsec.net/speaker.html#PSLOT782
Software Source Repository REPOSITORY
https://gist.github.com/alessandrobertoldi/1ebe0f48aa0119d787ac0ff710057d92
Software Source Repository REPOSITORY
https://github.com/alessandrobertoldi/research/blob/main/infinity-day-at-scale-deepsec2025.pdf
www.n-able.com/products/mail-assur... WEB
https://www.n-able.com/products/mail-assure
seclists.org/fulldisclosure/2026... WEB
http://seclists.org/fulldisclosure/2026/Jun/10

Frequently Asked Questions

What is CVE-2025-68624?
CVE-2025-68624 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-290: Authentication Bypass by Spoofing.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2025-68624?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2025-68624?
CVE-2025-68624 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2025-68624?
CVE-2025-68624 is classified under CWE-290: Authentication Bypass by Spoofing (This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.).
How can I check Maven dependencies for CVE-2025-68624?
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-8wch-g3f4-9xpr",
  "modified" : "2026-09-17T18:31:32Z",
  "published" : "2026-09-14T03:30:21Z",
  "aliases" : [ "CVE-2025-68624" ],
  "details" : "N-able Mail Assure through April 2026 contains a design-level authorization flaw that allows an authenticated SMTP user to send outbound email using MAIL FROM addresses belonging to other tenants. When connecting to the SMTP TCP port and performing SMTP AUTH with valid credentials, the server accepts arbitrary sender domains without enforcing any domain-to-account binding. As a result, an attacker from any tenant can impersonate other tenant domains, producing messages that pass SPF and DMARC validation. NOTE: N-able's position is that the behavior is intended functionality of its shared SMTP relay architecture and that the service does not represent that it enforces per-tenant sender-domain binding.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-68624"
  }, {
    "type" : "WEB",
    "url" : "https://deepsec.net/speaker.html#PSLOT782"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/alessandrobertoldi/1ebe0f48aa0119d787ac0ff710057d92"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/alessandrobertoldi/research/blob/main/infinity-day-at-scale-deepsec2025.pdf"
  }, {
    "type" : "WEB",
    "url" : "https://www.n-able.com/products/mail-assure"
  }, {
    "type" : "WEB",
    "url" : "http://seclists.org/fulldisclosure/2026/Jun/10"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-290" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-14T01:16:27Z"
  }
}