CVE-2025-22937
📋 TL;DR
This vulnerability in Adtran 411 ONT devices allows attackers to escalate privileges from a lower-privileged user to administrative access. It affects organizations using Adtran 411 ONT fiber networking equipment. The high CVSS score indicates critical severity requiring immediate attention.
💻 Affected Systems
- Adtran 411 ONT
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full device compromise allowing attackers to reconfigure network settings, intercept traffic, install persistent backdoors, or use the device as a pivot point into internal networks.
Likely Case
Attackers gain administrative control over the ONT device, enabling network disruption, service degradation, or credential harvesting from connected devices.
If Mitigated
Limited impact if devices are behind firewalls with strict network segmentation and access controls, though local network compromise remains possible.
🎯 Exploit Status
References suggest detailed exploitation information is available, though the CVE description mentions 'unspecified vectors' requiring some initial access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None provided in references
Restart Required: Yes
Instructions:
1. Monitor Adtran security advisories for patch availability. 2. Apply firmware updates when released. 3. Reboot devices after patching.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Adtran 411 ONT devices in dedicated VLANs with strict firewall rules limiting management access.
Access Control Hardening
allRestrict management interface access to specific administrative IP addresses only.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from critical systems
- Monitor device logs for privilege escalation attempts and unusual administrative activity
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI using 'show version' commandCheck Version:
show versionVerify Fix Applied:
Verify firmware version has been updated beyond vL80.00.0011.M2📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege escalation events
- Multiple failed login attempts followed by successful administrative access
- Configuration changes from non-admin accounts
Network Indicators:
- Unusual management protocol traffic to ONT devices
- Administrative access from unexpected source IPs
SIEM Query:
source="adtran-ont" AND (event_type="privilege_escalation" OR user_change="admin")