CVE-2025-53968
📋 TL;DR
This vulnerability allows attackers to perform unlimited authentication attempts, enabling brute-force attacks to gain unauthorized access and causing denial-of-service by overwhelming the authentication system. It affects systems with authentication mechanisms lacking rate limiting or attempt restrictions.
💻 Affected Systems
- Specific products not identified in provided references
📦 What is this software?
Evmapa by Evmapa
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete authentication system outage preventing all legitimate access, combined with successful credential brute-forcing leading to full system compromise.
Likely Case
Authentication service degradation or temporary unavailability, with potential unauthorized access to some accounts through brute-force attacks.
If Mitigated
Minimal impact with proper rate limiting and monitoring in place, though authentication attempts may still increase system load.
🎯 Exploit Status
Exploitation requires no authentication and can be performed with simple scripting tools. The technique is well-known and documented for similar vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-08
Restart Required: No
Instructions:
1. Check vendor advisory for specific patch information. 2. Apply available updates. 3. Test authentication functionality post-update. 4. Monitor for any issues.
🔧 Temporary Workarounds
Implement Authentication Rate Limiting
linuxConfigure rate limiting on authentication endpoints to restrict attempts per user/IP/time period
# Example using iptables for Linux: iptables -A INPUT -p tcp --dport [auth_port] -m state --state NEW -m recent --set --name AUTH
iptables -A INPUT -p tcp --dport [auth_port] -m state --state NEW -m recent --update --seconds 60 --hitcount 10 --name AUTH -j DROP
Implement Account Lockout Policy
allConfigure accounts to lock after specified number of failed attempts
# Windows: secpol.msc -> Account Policies -> Account Lockout Policy
# Linux PAM: edit /etc/pam.d/system-auth or relevant PAM config
🧯 If You Can't Patch
- Implement network-level rate limiting using firewalls or WAFs
- Deploy intrusion prevention systems to detect and block brute-force patterns
🔍 How to Verify
Check if Vulnerable:
Test authentication endpoint with rapid consecutive failed attempts; if unlimited attempts are allowed without blocking, system is vulnerable.Check Version:
Check system documentation or vendor-specific version commandsVerify Fix Applied:
Attempt to send authentication requests exceeding reasonable limits; verify requests are blocked or delayed after threshold.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts from single source
- Authentication request rate exceeding normal baseline
- Account lockout events
Network Indicators:
- High volume of authentication packets to single endpoint
- Sustained authentication traffic patterns
SIEM Query:
source_ip=[attacker_ip] AND (event_type="authentication_failed" OR event_type="login_failed") | stats count by source_ip | where count > 10