CVE-2025-13662
📋 TL;DR
CVE-2025-13662 is a critical vulnerability in Ivanti Endpoint Manager's patch management component that allows remote unauthenticated attackers to execute arbitrary code by exploiting improper cryptographic signature verification. This affects all Ivanti Endpoint Manager installations prior to version 2024 SU4 SR1. User interaction is required for successful exploitation.
💻 Affected Systems
- Ivanti Endpoint Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the Ivanti Endpoint Manager server, enabling lateral movement across the network, data exfiltration, and persistent backdoor installation.
Likely Case
Attacker gains initial foothold on the EPM server, potentially compromising the patch management infrastructure and using it to deploy malware to managed endpoints.
If Mitigated
Limited impact due to network segmentation, strict access controls, and monitoring that detects exploitation attempts before successful compromise.
🎯 Exploit Status
Remote unauthenticated exploitation is possible but requires user interaction. The vulnerability involves cryptographic signature bypass which requires specific knowledge of the implementation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024 SU4 SR1
Vendor Advisory: https://forums.ivanti.com/s/article/Security-Advisory-EPM-December-2025-for-EPM-2024
Restart Required: Yes
Instructions:
1. Download Ivanti Endpoint Manager 2024 SU4 SR1 from the Ivanti support portal. 2. Backup current configuration and database. 3. Run the installer with administrative privileges. 4. Follow the upgrade wizard. 5. Restart the Ivanti Endpoint Manager service and verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Ivanti Endpoint Manager servers from internet access and restrict internal network access to administrative users only.
Patch Source Restriction
windowsConfigure Ivanti Endpoint Manager to only accept patches from trusted, verified sources using allowlisting.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Ivanti EPM servers from both internet and general corporate network access
- Deploy application allowlisting on Ivanti EPM servers to prevent execution of unauthorized binaries
🔍 How to Verify
Check if Vulnerable:
Check Ivanti Endpoint Manager version in the console under Help > About. If version is earlier than 2024 SU4 SR1, the system is vulnerable.Check Version:
In Ivanti EPM console: Navigate to Help > About to view version informationVerify Fix Applied:
After patching, verify the version shows 2024 SU4 SR1 or later in Help > About. Test patch management functionality to ensure it works correctly with proper signature verification.📡 Detection & Monitoring
Log Indicators:
- Failed cryptographic signature verification attempts
- Unusual patch deployment activities from non-standard sources
- Process creation events from Ivanti EPM service with unusual parameters
Network Indicators:
- Unusual outbound connections from Ivanti EPM server
- Network traffic to/from Ivanti EPM server on non-standard ports
- DNS queries for suspicious domains from EPM server
SIEM Query:
source="ivanti_epm" AND (event_type="signature_verification_failure" OR process_name="powershell.exe" AND parent_process="ivanti_service.exe")