CVE-2025-27258
📋 TL;DR
Ericsson Network Manager (ENM) versions before 25.1 GA contain an improper access control vulnerability that allows attackers to escalate privileges. This affects organizations using ENM for telecom network management. Successful exploitation could give attackers administrative control over the network management system.
💻 Affected Systems
- Ericsson Network Manager (ENM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain full administrative control over ENM, allowing them to manipulate network configurations, disrupt telecom services, or pivot to other critical systems.
Likely Case
Attackers gain elevated privileges to access sensitive network data, modify configurations, or disrupt network management operations.
If Mitigated
With proper network segmentation and access controls, impact is limited to the ENM system itself without lateral movement.
🎯 Exploit Status
CWE-284 indicates improper access control, suggesting exploitation may be straightforward once initial access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ENM 25.1 GA
Vendor Advisory: https://www.ericsson.com/en/about-us/security/psirt/security-bulletin-enm-october-2025
Restart Required: Yes
Instructions:
1. Download ENM 25.1 GA from Ericsson support portal. 2. Backup current configuration and data. 3. Apply the update following Ericsson's upgrade procedures. 4. Restart ENM services. 5. Verify functionality post-upgrade.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ENM systems from untrusted networks and limit access to authorized administrators only.
Access Control Hardening
allImplement strict role-based access controls and multi-factor authentication for ENM administrative interfaces.
🧯 If You Can't Patch
- Implement network segmentation to isolate ENM from other critical systems
- Enable detailed logging and monitoring for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check ENM version via administrative interface or system logs. Versions prior to 25.1 GA are vulnerable.Check Version:
Check ENM web interface → System Information or consult ENM documentation for version check commands.Verify Fix Applied:
Verify ENM version shows 25.1 GA or later in system information.📡 Detection & Monitoring
Log Indicators:
- Unusual privilege escalation attempts
- Administrative actions from non-admin accounts
- Failed authentication followed by successful privileged access
Network Indicators:
- Unexpected administrative connections to ENM
- Traffic patterns suggesting privilege escalation attempts
SIEM Query:
source="ENM" AND (event_type="privilege_escalation" OR user_role_change="true")