CVE-2025-21994 Vulnerability Analysis & Exploit Details

CVE-2025-21994
Vulnerability Scoring

Analysis In Progress
Analysis In Progress

Attack Complexity Details

  • Attack Complexity:
    Attack Complexity Analysis In Progress
  • Attack Vector:
    Attack Vector Under Analysis
  • Privileges Required: None
    No authentication is required for exploitation.
  • Scope:
    Impact is confined to the initially vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2025-21994 Details

Status: Awaiting Analysis

Last updated: 🕐 10 Apr 2025, 13:15 UTC
Originally published on: 🕑 02 Apr 2025, 14:16 UTC

Time between publication and last update: 7 days

CVSS Release:

CVE-2025-21994 Vulnerability Summary

CVE-2025-21994: In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for num_aces field of smb_acl parse_dcal() validate num_aces to allocate posix_ace_state_array. if (num_aces > ULONG_MAX / sizeof(struct smb_ace *)) It is an incorrect validation that we can create an array of size ULONG_MAX. smb_acl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.

Assessing the Risk of CVE-2025-21994

Access Complexity Graph

The exploitability of CVE-2025-21994 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-2025-21994

No exploitability data is available for CVE-2025-21994.

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-2025-21994, 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-2025-21994, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2025-21994 does not compromise confidentiality.
  • Integrity: None
    CVE-2025-21994 does not impact data integrity.
  • Availability: None
    CVE-2025-21994 does not affect system availability.

CVE-2025-21994 References

External References

CWE Common Weakness Enumeration

Unknown

Protect Your Infrastructure against CVE-2025-21994: 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-2025-48027 – The HttpAuth plugin in pGina.Fork through 3.9.9.12 allows authentication bypass when an adversary controls DNS resolution for pginaloginserver.
  • CVE-2025-3742 – The Responsive Lightbox & Gallery WordPress plugin before 2.5.1 does not validate and escape some of its attributes before outputting them back in ...
  • CVE-2024-13914 – The File Manager Advanced Shortcode WordPress plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 2.5....
  • CVE-2025-48024 – In BlueWave Checkmate before 2.1, an authenticated regular user can access sensitive application secrets via the /api/v1/settings endpoint.
  • CVE-2025-3053 – The UiPress lite | Effortless custom dashboards, admin themes and pages plugin for WordPress is vulnerable to Remote Code Execution in all versions...