CVE-2025-10161: Perfektive Auth Bypass Vulnerability

CVE-2025-10161 Overview

CVE-2025-10161 is an authentication security vulnerability affecting Turkguven Software Technologies Inc. Perfektive software. The vulnerability encompasses multiple security weaknesses including improper restriction of excessive authentication attempts (CWE-307), client-side enforcement of server-side security, and reliance on untrusted inputs in security decisions. These flaws enable attackers to perform brute force attacks, bypass authentication mechanisms, and circumvent security functionality through network-accessible attack vectors.

Critical Impact

Attackers can exploit this vulnerability to bypass authentication controls, gain unauthorized access to protected resources, and compromise the confidentiality, integrity, and availability of affected systems without requiring any user interaction or prior authentication.

Affected Products

• Turkguven Software Technologies Inc. Perfektive versions before Version: 12574 Build: 2701

Discovery Timeline

• 2025-11-11 - CVE CVE-2025-10161 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-10161

Vulnerability Analysis

This vulnerability stems from a fundamental architectural flaw in how the Perfektive application handles authentication security. The application fails to properly restrict excessive authentication attempts on the server side, instead relying on client-side enforcement mechanisms that can be easily bypassed by attackers. Additionally, the system makes security decisions based on untrusted inputs, allowing attackers to manipulate authentication flows.

The combination of these weaknesses creates a multi-layered authentication bypass scenario. Attackers can leverage brute force techniques without encountering rate limiting or account lockout mechanisms, as these protections exist only in client-side code. By intercepting and modifying requests, adversaries can bypass authentication entirely or circumvent security functionality designed to protect sensitive operations.

Root Cause

The root cause of this vulnerability lies in the improper implementation of authentication controls. Security mechanisms that should be enforced server-side are instead implemented in client-side code, which attackers can easily bypass using browser developer tools, proxy interceptors, or custom scripts. The lack of server-side rate limiting for authentication attempts combined with the acceptance of untrusted client inputs for security decisions creates exploitable conditions.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker can target the authentication endpoint directly from any network location with access to the application. The attack process involves:

1. Identifying the authentication endpoint of the Perfektive application
2. Bypassing client-side rate limiting controls by directly sending requests to the server
3. Performing brute force attacks against user accounts without triggering lockout mechanisms
4. Manipulating request parameters to bypass authentication checks that rely on untrusted inputs
5. Gaining unauthorized access to protected functionality and data

The attack can be performed using common penetration testing tools or custom scripts that send authentication requests directly to the server, bypassing any client-side JavaScript validation or rate limiting.

Detection Methods for CVE-2025-10161

Indicators of Compromise

• Unusually high volume of authentication requests from single IP addresses or IP ranges
• Multiple failed login attempts across numerous user accounts in short time periods
• Authentication traffic patterns that bypass typical browser-based request flows
• Successful logins following rapid sequences of failed authentication attempts

Detection Strategies

• Implement server-side logging of all authentication attempts with source IP, timestamp, and outcome
• Deploy intrusion detection rules to identify brute force patterns against authentication endpoints
• Monitor for authentication requests that lack typical browser headers or client-side tokens
• Correlate failed authentication attempts across accounts to detect credential stuffing attacks

Monitoring Recommendations

• Configure real-time alerting for authentication anomalies exceeding baseline thresholds
• Review authentication logs daily for patterns indicative of brute force or bypass attempts
• Monitor network traffic to authentication endpoints for unusual request volumes or patterns
• Track successful authentications that follow suspicious activity for potential compromise indicators

How to Mitigate CVE-2025-10161

Immediate Actions Required

• Upgrade Turkguven Perfektive to Version 12574 Build 2701 or later immediately
• Implement network-level rate limiting on authentication endpoints as an interim measure
• Enable enhanced authentication logging to capture all login attempts and outcomes
• Review recent authentication logs for signs of exploitation or unauthorized access

Patch Information

The vendor has addressed this vulnerability in Perfektive Version 12574 Build 2701. Organizations should update to this version or later to remediate the vulnerability. For detailed patch information, refer to the USOM Security Notification TR-25-0387.

Workarounds

• Deploy a Web Application Firewall (WAF) with rate limiting rules for authentication endpoints
• Implement IP-based blocking for sources exceeding authentication attempt thresholds
• Enable multi-factor authentication to reduce the impact of credential compromise
• Restrict access to authentication endpoints from trusted network ranges where feasible
• Consider implementing CAPTCHA challenges after failed authentication attempts

Organizations should treat these workarounds as temporary measures until the official patch can be applied. Contact Turkguven Software Technologies Inc. for additional guidance on securing affected deployments.