CVE-2025-10643: Wondershare Repairit Auth Bypass Flaw

CVE-2025-10643 Overview

CVE-2025-10643 is an Incorrect Permission Assignment vulnerability in Wondershare Repairit that allows remote attackers to bypass authentication on affected installations. This authentication bypass vulnerability does not require any prior authentication to exploit, making it particularly dangerous for exposed systems.

The specific flaw exists within the permissions granted to a storage account token. An attacker can leverage this vulnerability to bypass authentication mechanisms on the system, potentially gaining unauthorized access to sensitive functionality and data. This vulnerability was tracked by the Zero Day Initiative as ZDI-CAN-26902.

Critical Impact

Remote attackers can bypass authentication without credentials, potentially gaining unauthorized access to system functionality and sensitive data processed by Wondershare Repairit.

Affected Products

• Wondershare Repairit version 6.5.2
• Wondershare Repairit (earlier versions may also be affected)

Discovery Timeline

• 2025-09-17 - CVE-2025-10643 published to NVD
• 2025-09-19 - Last updated in NVD database

Technical Details for CVE-2025-10643

Vulnerability Analysis

This vulnerability falls under CWE-732 (Incorrect Permission Assignment for Critical Resource), which occurs when a product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. In this case, the storage account token used by Wondershare Repairit is granted excessive permissions that enable authentication bypass.

The flaw allows unauthenticated remote attackers to circumvent the application's authentication controls entirely. Since no authentication is required to exploit this vulnerability, any attacker with network access to an affected installation can potentially leverage this issue. The vulnerability impacts both confidentiality and integrity, as attackers can access protected resources and potentially modify system state.

Root Cause

The root cause of CVE-2025-10643 lies in improper permission assignment for a storage account token within Wondershare Repairit. The application fails to properly restrict the capabilities granted to this token, allowing it to be leveraged in ways that bypass normal authentication requirements. This represents a fundamental design flaw in how the application manages access control for its storage mechanisms.

Attack Vector

The attack vector is network-based, requiring no user interaction or prior authentication. An attacker targeting this vulnerability would:

1. Identify an accessible installation of Wondershare Repairit version 6.5.2 or earlier
2. Interact with the storage account token mechanism
3. Leverage the excessive permissions to bypass authentication controls
4. Gain unauthorized access to protected system functionality

The vulnerability is exploitable remotely over the network with low attack complexity. For detailed technical information, refer to the Zero Day Initiative Advisory ZDI-25-895.

Detection Methods for CVE-2025-10643

Indicators of Compromise

• Unexpected authentication events or access logs showing unauthenticated sessions accessing protected resources
• Anomalous storage account token usage patterns or token requests from unexpected sources
• Unauthorized access to files or data managed by Wondershare Repairit
• Network traffic to Repairit instances from untrusted IP addresses without corresponding authentication attempts

Detection Strategies

• Monitor authentication logs for bypass attempts or sessions that skip normal authentication flows
• Implement network monitoring to detect unauthorized access attempts to Wondershare Repairit services
• Deploy endpoint detection solutions to identify exploitation attempts targeting the storage token mechanism
• Audit access patterns to detect anomalous behavior consistent with authentication bypass

Monitoring Recommendations

• Enable verbose logging for Wondershare Repairit authentication and authorization events
• Configure alerts for failed authentication attempts followed by successful access without proper credentials
• Monitor network connections to Repairit installations for unusual patterns or sources
• Implement file integrity monitoring for files managed by the application

How to Mitigate CVE-2025-10643

Immediate Actions Required

• Review and audit all installations of Wondershare Repairit version 6.5.2 for potential compromise
• Restrict network access to Wondershare Repairit installations to trusted networks and users only
• Implement additional network-level authentication controls such as VPN requirements
• Monitor affected systems for indicators of compromise until patches are available

Patch Information

Consult the Zero Day Initiative Advisory ZDI-25-895 for the latest patch information from Wondershare. Organizations should apply security updates as soon as they become available from the vendor.

Workarounds

• Implement network segmentation to limit exposure of Wondershare Repairit installations
• Deploy web application firewalls or network access controls to restrict unauthorized access
• Consider disabling or isolating affected installations until a patch is available
• Implement additional authentication layers at the network level (VPN, zero-trust access controls)

# Network isolation example - restrict access to Repairit services
# Adjust IP ranges and ports based on your environment
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP