CVE-2025-27190: Adobe Commerce Auth Bypass Vulnerability

CVE-2025-27190 Overview

CVE-2025-27190 is an Improper Access Control vulnerability affecting Adobe Commerce, Adobe Commerce B2B, and Adobe Magento Open Source platforms. This security flaw allows attackers to bypass security measures and gain unauthorized access to protected resources or functionality within affected e-commerce installations. The vulnerability can be exploited remotely without requiring user interaction, making it particularly concerning for organizations running vulnerable versions.

Critical Impact

Attackers can bypass security features in Adobe Commerce and Magento platforms to gain unauthorized access without user interaction.

Affected Products

• Adobe Commerce versions 2.4.7-p4, 2.4.6-p9, 2.4.5-p11, 2.4.4-p12, 2.4.8-beta2 and earlier
• Adobe Commerce B2B versions 1.5.1, 1.4.2-p4, 1.3.5-p10, 1.3.4-p12, 1.3.3-p12 and earlier
• Adobe Magento Open Source versions 2.4.7-p4, 2.4.6-p9, 2.4.5-p11, 2.4.4-p12, 2.4.8-beta2 and earlier

Discovery Timeline

• April 8, 2025 - CVE-2025-27190 published to NVD
• June 23, 2025 - Last updated in NVD database

Technical Details for CVE-2025-27190

Vulnerability Analysis

This vulnerability is classified under CWE-284 (Improper Access Control), which occurs when software does not properly restrict access to functionality or resources based on the user's authorization level. In the context of Adobe Commerce and Magento platforms, this flaw enables attackers to circumvent intended security mechanisms that should prevent unauthorized actions.

The vulnerability is exploitable over the network with low attack complexity and requires no privileges or user interaction. While the integrity impact is limited, the accessibility of the attack vector makes this a significant concern for e-commerce deployments processing sensitive customer and transaction data.

Root Cause

The root cause of CVE-2025-27190 lies in improper access control implementation within the Adobe Commerce and Magento codebase. The affected components fail to adequately verify authorization before granting access to protected functionality, allowing attackers to bypass security features that should restrict certain operations to authorized users only.

Attack Vector

The attack can be executed remotely over the network. An attacker does not need valid credentials or any form of user interaction to exploit this vulnerability. The attack involves sending crafted requests that bypass the access control mechanisms, potentially allowing modification of data or access to restricted functionality.

The vulnerability affects the integrity of the system, as attackers can bypass security measures designed to protect the e-commerce platform's operations. While there is no direct confidentiality or availability impact documented, the ability to circumvent security features could be chained with other vulnerabilities for more severe exploitation scenarios.

Detection Methods for CVE-2025-27190

Indicators of Compromise

• Unusual API requests accessing administrative or restricted endpoints without proper authentication tokens
• Access log entries showing successful requests to protected resources from unauthorized sources
• Anomalous patterns of requests that bypass normal authentication workflows

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests attempting to access restricted endpoints without proper authorization
• Review access logs for requests that successfully reach protected functionality without corresponding authentication events
• Deploy application-level monitoring to identify access control bypass attempts in real-time

Monitoring Recommendations

• Enable detailed logging for all authentication and authorization events in Adobe Commerce/Magento
• Configure alerts for access to administrative functions from unexpected IP addresses or without proper session validation
• Regularly audit user permissions and access patterns to identify potential security bypass attempts

How to Mitigate CVE-2025-27190

Immediate Actions Required

• Update Adobe Commerce to versions 2.4.7-p5, 2.4.6-p10, 2.4.5-p12, 2.4.4-p13, or 2.4.8-beta3 or later as specified in Adobe's security bulletin
• Review and audit access control configurations to ensure proper restrictions are in place
• Implement additional access controls at the network level while patching is scheduled

Patch Information

Adobe has released security updates addressing this vulnerability as part of security bulletin APSB25-26. Organizations should apply the appropriate patch version for their installation:

• Adobe Commerce 2.4.7 branch: Update to 2.4.7-p5 or later
• Adobe Commerce 2.4.6 branch: Update to 2.4.6-p10 or later
• Adobe Commerce 2.4.5 branch: Update to 2.4.5-p12 or later
• Adobe Commerce 2.4.4 branch: Update to 2.4.4-p13 or later
• Adobe Commerce B2B: Apply corresponding patches per the security bulletin

Workarounds

• Implement strict IP allowlisting for administrative interfaces to limit potential attack surfaces
• Configure web application firewall rules to provide an additional layer of access control validation
• Review and restrict API endpoint access using authentication proxy layers until patches can be applied

# Example: Restrict admin access by IP in .htaccess (Apache)
<Directory "/var/www/html/admin">
    Require ip 10.0.0.0/8
    Require ip 192.168.0.0/16
</Directory>