CVE-2025-2415: Akinsoft MyRezzta Auth Bypass Vulnerability

CVE-2025-2415 Overview

CVE-2025-2415 is an Improper Restriction of Excessive Authentication Attempts vulnerability (CWE-307) affecting Akinsoft MyRezzta restaurant management software. This authentication bypass flaw allows attackers to circumvent login protections by exploiting the lack of rate limiting or account lockout mechanisms, enabling brute-force attacks against user credentials.

Critical Impact

Attackers can bypass authentication controls through unlimited login attempts, potentially gaining unauthorized access to sensitive restaurant management systems, customer data, and business operations.

Affected Products

• Akinsoft MyRezzta versions s2.03.01 through v2.05.01 (exclusive)

Discovery Timeline

• 2025-09-03 - CVE-2025-2415 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-2415

Vulnerability Analysis

This vulnerability stems from the absence of proper controls to limit authentication attempts in the MyRezzta application. When users attempt to log in, the system fails to implement adequate mechanisms to detect and prevent brute-force attacks. This allows malicious actors to make unlimited password guessing attempts without triggering account lockouts, CAPTCHA challenges, or other protective measures.

The network-accessible nature of the vulnerability means attackers can remotely target exposed MyRezzta instances. Successful exploitation requires no prior authentication or user interaction, making it particularly dangerous for internet-facing deployments. The impact includes high confidentiality concerns due to potential credential compromise, along with limited integrity and availability impacts from unauthorized access to the system.

Root Cause

The root cause is the improper implementation of authentication attempt restrictions (CWE-307). The MyRezzta application lacks essential security controls such as:

• Rate limiting on login endpoints
• Progressive delay mechanisms between failed attempts
• Account lockout policies after consecutive failures
• CAPTCHA or multi-factor authentication challenges after suspicious activity

Without these protections, the authentication mechanism remains vulnerable to automated credential guessing attacks.

Attack Vector

The attack vector is network-based, allowing remote exploitation without authentication. An attacker can target the MyRezzta login interface and systematically attempt credential combinations using automated tools. The low attack complexity means no special conditions or sophisticated techniques are required—standard brute-force or credential stuffing tools can effectively exploit this weakness.

The vulnerability enables attackers to test large volumes of username and password combinations against the system. Combined with common password lists or previously leaked credentials, this significantly increases the likelihood of successful account compromise.

Detection Methods for CVE-2025-2415

Indicators of Compromise

• Unusually high volume of failed login attempts from single or multiple IP addresses
• Rapid succession of authentication requests to MyRezzta login endpoints
• Login attempts using common username patterns or known leaked credentials
• Successful authentication following numerous failed attempts from the same source

Detection Strategies

• Monitor authentication logs for abnormal patterns of failed login attempts
• Implement alerting thresholds for login failures per source IP within defined time windows
• Deploy web application firewalls (WAF) with brute-force detection capabilities
• Analyze network traffic for automated login attempt patterns

Monitoring Recommendations

• Enable detailed logging on MyRezzta authentication endpoints
• Configure SIEM rules to correlate failed authentication events across the environment
• Establish baseline metrics for normal login activity to identify anomalous behavior
• Review authentication logs regularly for signs of credential stuffing or brute-force attacks

How to Mitigate CVE-2025-2415

Immediate Actions Required

• Upgrade Akinsoft MyRezzta to version v2.05.01 or later immediately
• Implement network-level rate limiting on authentication endpoints
• Deploy a web application firewall with brute-force protection rules
• Enforce strong password policies and consider implementing multi-factor authentication
• Review authentication logs for evidence of prior exploitation attempts

Patch Information

Akinsoft has addressed this vulnerability in MyRezzta version v2.05.01. Organizations running affected versions (s2.03.01 through versions prior to v2.05.01) should upgrade immediately. For additional details, refer to the USOM Security Notification TR-25-0205.

Workarounds

• Implement external rate limiting using reverse proxy or WAF solutions
• Configure fail2ban or similar tools to block IPs after excessive failed login attempts
• Restrict access to MyRezzta login interfaces to trusted networks or VPN connections
• Enable CAPTCHA challenges on the login page as an interim measure

# Example: Implement rate limiting with nginx
# Add to nginx configuration for MyRezzta
limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;

location /login {
    limit_req zone=login burst=3 nodelay;
    # Additional proxy configuration
}