CVE-2021-4385 Vulnerability Analysis & Exploit Details

CVE-2021-4385
Vulnerability Scoring

8.8
/10
Severe Risk

Cybersecurity professionals consider CVE-2021-4385 an immediate threat requiring urgent 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: Required
    User interaction is necessary for successful exploitation.

CVE-2021-4385 Details

Status: Modified

Last updated: 🕡 21 Nov 2024, 06:37 UTC
Originally published on: 🕓 01 Jul 2023, 04:15 UTC

Time between publication and last update: 509 days

CVSS Release: version 3

CVSS3 Source

security@wordfence.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2021-4385 Vulnerability Summary

CVE-2021-4385: The WP Private Content Plus plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.1. This is due to missing or incorrect nonce validation on the save_groups() function. This makes it possible for unauthenticated attackers to add new group members via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Assessing the Risk of CVE-2021-4385

Access Complexity Graph

The exploitability of CVE-2021-4385 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-2021-4385

With low attack complexity and no required privileges, CVE-2021-4385 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-2021-4385, 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-2021-4385, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2021-4385 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2021-4385 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2021-4385 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.187% (probability of exploit)

EPSS Percentile: 57.05% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 42.95% of others.

CVE-2021-4385 References

External References

CWE Common Weakness Enumeration

Unknown

Vulnerable Configurations

  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:-:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:-:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.0:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.0:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.2:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.2:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.3:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.3:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.4:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.4:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.5:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.5:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.6:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.6:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.6.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.6.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.7:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.7:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.8:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.8:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.9:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.9:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.9.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.9.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.10:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.10:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.11:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.11:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.12:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.12:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.13:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.13:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.13.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.13.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.14:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.14:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.15:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.15:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.16:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.16:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.17:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.17:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.18:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.18:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.18.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.18.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.19:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.19:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.20:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.20:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.21:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.21:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.22:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.22:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.23:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.23:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.24:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.24:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.25:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.25:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.26:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.26:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.27:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.27:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.28:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.28:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.29:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.29:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.30:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.30:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.31:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:1.31:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.0:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.0:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.2:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.2:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.3:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.3:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.11:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.11:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.12:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.12:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.21:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.21:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.31:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:2.31:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.0:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.0:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.1:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.1:*:*:*:*:wordpress:*:*
  • cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.01:*:*:*:*:wordpress:*:*
    cpe:2.3:a:wpexpertdeveloper:wp_private_content_plus:3.01:*:*:*:*:wordpress:*:*

Protect Your Infrastructure against CVE-2021-4385: 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-2024-43107 – Improper Certificate Validation (CWE-295) in the Gallagher Milestone Integration Plugin (MIP) permits unauthenticated messages (e.g. alarm events) ...
  • CVE-2024-41724 – Improper Certificate Validation (CWE-295) in the Gallagher Command Centre SALTO integration allowed an attacker to spoof the SALTO server. Thi...
  • CVE-2025-2133 – A vulnerability classified as problematic was found in ftcms 2.1. Affected by this vulnerability is an unknown functionality of the file /admin/ind...
  • CVE-2025-2132 – A vulnerability classified as critical has been found in ftcms 2.1. Affected is an unknown function of the file /admin/index.php/web/ajax_all_lists...
  • CVE-2025-2131 – A vulnerability was found in dayrui XunRuiCMS up to 4.6.3. It has been rated as problematic. This issue affects some unknown processing of the comp...