CVE-2025-2910: MeetMe Auth Bypass Vulnerability

CVE-2025-2910 Overview

CVE-2025-2910 is a user enumeration vulnerability in the password reset module of the MeetMe authentication service, affecting versions prior to 2024-09. The flaw is associated with Fermax mobile applications and stems from distinct error messages returned during the password reset workflow. An attacker can submit email addresses to the reset endpoint and infer registration status based on the server response. The issue is classified under [CWE-204: Observable Response Discrepancy]. This information disclosure weakness enables reconnaissance that supports targeted phishing, credential stuffing, and follow-on account takeover attempts against valid accounts identified through the enumeration process.

Critical Impact
Attackers can remotely enumerate valid user email addresses without authentication, exposing account existence data that facilitates targeted phishing and credential-based attacks against MeetMe account holders.

Affected Products

MeetMe authentication service (versions prior to 2024-09)
Fermax mobile applications relying on the MeetMe authentication service
Password reset module of the MeetMe service

Discovery Timeline

2025-03-28 - CVE-2025-2910 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-2910

Vulnerability Analysis

The vulnerability resides in the password reset endpoint of the MeetMe authentication service. When a user submits an email address to request a password reset, the service returns different error messages depending on whether the email is registered. This behavioral discrepancy allows unauthenticated attackers to systematically test email addresses and confirm which correspond to valid accounts. The flaw does not directly compromise credentials or account contents. However, it provides attackers with a validated target list that materially improves the success rate of downstream attacks such as spear phishing, password spraying, and credential stuffing against the identified accounts.

Root Cause

The root cause is inconsistent error handling in the password reset workflow. The application discloses account state through response differentiation rather than returning a uniform message for all reset requests. This is a textbook instance of [CWE-204: Observable Response Discrepancy], where the application's response varies based on internal state that should remain confidential.

Attack Vector

Exploitation requires only network access to the MeetMe password reset endpoint. No authentication, user interaction, or elevated privileges are needed. An attacker submits candidate email addresses to the reset endpoint and parses the server responses. Automated scripts can iterate through email lists to compile registered account inventories at scale.

No public proof-of-concept code has been released. See the INCIBE Security Notice on Vulnerabilities for the vendor-coordinated disclosure details.

Detection Methods for CVE-2025-2910

Indicators of Compromise

High-volume password reset requests originating from a single IP address or narrow IP range within a short window
Sequential or dictionary-style email submissions to the password reset endpoint
Elevated ratio of reset requests that never complete the full reset workflow

Detection Strategies

Instrument the password reset endpoint to log all submitted email addresses, source IPs, and response codes for anomaly analysis
Baseline normal password reset request volume per user, IP, and geography, then alert on statistical deviations
Correlate enumeration patterns with subsequent authentication failures to identify follow-on credential attacks

Monitoring Recommendations

Forward web application logs and authentication service telemetry to a centralized SIEM for cross-source correlation
Monitor for user agents and request signatures consistent with automated enumeration tooling
Track reset requests targeting non-existent accounts as a leading indicator of active enumeration campaigns

How to Mitigate CVE-2025-2910

Immediate Actions Required

Upgrade the MeetMe authentication service to a version released 2024-09 or later that addresses the observable response discrepancy
Apply rate limiting and CAPTCHA challenges to the password reset endpoint to slow automated enumeration attempts
Review authentication logs for prior enumeration activity and flag any identified accounts for enhanced monitoring

Patch Information

The vendor has resolved the issue in MeetMe authentication service versions released after 2024-09. Refer to the INCIBE Security Notice on Vulnerabilities for coordinated advisory details covering the Fermax mobile application ecosystem.

Workarounds

Modify the password reset endpoint to return a uniform response regardless of whether the submitted email address exists
Enforce strict per-IP and per-session rate limits on password reset requests
Require CAPTCHA or equivalent bot-mitigation controls before processing reset submissions
Notify users out-of-band (via the registered email) rather than confirming account state in the HTTP response

bash

# Configuration example
# Sample NGINX rate limit for a password reset endpoint
limit_req_zone $binary_remote_addr zone=pwreset:10m rate=5r/m;

location /api/auth/password-reset {
    limit_req zone=pwreset burst=3 nodelay;
    proxy_pass http://meetme_backend;
}