CVE-2025-43921 Vulnerability Analysis & Exploit Details

CVE-2025-43921
Vulnerability Scoring

5.3
/10
Significant Risk

Security assessments indicate that CVE-2025-43921 presents a notable risk, potentially requiring prompt mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: None
    No privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2025-43921 Details

Status: Modified

Last updated: 🕑 28 Apr 2025, 14:15 UTC
Originally published on: 🕐 20 Apr 2025, 01:15 UTC

Time between publication and last update: 8 days

CVSS Release: version 3

CVSS3 Source

cve@mitre.org

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVE-2025-43921 Vulnerability Summary

CVE-2025-43921: GNU Mailman 2.1.39, as bundled in cPanel (and WHM), allows unauthenticated attackers to create lists via the /mailman/create endpoint. NOTE: multiple third parties report that they are unable to reproduce this, regardless of whether cPanel or WHM is used.

Assessing the Risk of CVE-2025-43921

Access Complexity Graph

The exploitability of CVE-2025-43921 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2025-43921

With low attack complexity and no required privileges, CVE-2025-43921 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2025-43921, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2025-43921, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2025-43921 has no significant impact on data confidentiality.
  • Integrity: Low
    Exploiting CVE-2025-43921 may cause minor changes to data without severely impacting its accuracy.
  • Availability: None
    CVE-2025-43921 does not impact system availability.

CVE-2025-43921 References

External References

CWE Common Weakness Enumeration

CWE-863

Vulnerable Configurations

  • cpe:2.3:a:gnu:mailman:2.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.10b1:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.10b1:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.10b3:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.10b3:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.10b4:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.10b4:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.14-1:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.14-1:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.18-1:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.18-1:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.1:beta1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.1:beta1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.4:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.5:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.5.8:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.5.8:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.6:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.6:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.7:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.7:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.8:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.8:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.9:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.9:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1b1:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1b1:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.10:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.10:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.10:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.10:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.11:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.11:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.11:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.11:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.11:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.11:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.12:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.12:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.12:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.12:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.12:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.12:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.13:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.13:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.13:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.13:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.14:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.14:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.14:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.14:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.15:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.15:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.15:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.15:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.16:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.16:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.16:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.16:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.16:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.16:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.16:rc3:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.16:rc3:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.17:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.17:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.18:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.18:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.18:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.18:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.18:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.18:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.18:rc3:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.18:rc3:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.19:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.19:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.19:rc1:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.19:rc1:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.19:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.19:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.19:rc3:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.19:rc3:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.20:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.20:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.21:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.21:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.21:rc2:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.21:rc2:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.22:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.22:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.23:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.23:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.24:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.24:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.25:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.25:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.26:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.26:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.27:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.27:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.28:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.28:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.29:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.29:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.30:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.30:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.31:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.31:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.33:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.33:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.34:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.34:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.35:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.35:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.36:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.36:*:*:*:*:*:*:*
  • cpe:2.3:a:gnu:mailman:2.1.37:*:*:*:*:*:*:*
    cpe:2.3:a:gnu:mailman:2.1.37:*:*:*:*:*:*:*

Protect Your Infrastructure against CVE-2025-43921: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-4031 – A vulnerability was found in PHPGurukul Pre-School Enrollment System 1.0. It has been declared as critical. This vulnerability affects unknown code...
  • CVE-2025-4030 – A vulnerability was found in PHPGurukul COVID19 Testing Management System 1.0. It has been classified as critical. This affects an unknown part of ...
  • CVE-2024-12706 – Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in OpenText™ Digital Asset Management. T he vul...
  • CVE-2025-4029 – A vulnerability was found in code-projects Personal Diary Management System 1.0 and classified as critical. Affected by this issue is the function ...
  • CVE-2025-4028 – A vulnerability has been found in PHPGurukul COVID19 Testing Management System 1.0 and classified as critical. Affected by this vulnerability is an...