FireEye EDR Agent Vulnerability Exposes Endpoints to Code Injection Attacks
A newly discovered vulnerability in the FireEye Endpoint Detection and Response (EDR) agent poses a serious threat to endpoint security, potentially allowing attackers to inject malicious code and disable critical protections.
Tracked as CVE-2025-0618, this vulnerability was publicly disclosed today and underscores the persistent challenges in securing endpoint protection platforms against sophisticated threat actors.
About the Vulnerability
The flaw allows malicious actors to trigger a persistent denial-of-service (DoS) condition within the FireEye EDR agent by sending a specially crafted tamper protection event to the HX service. This triggers an exception in the event processing logic, effectively disabling the tamper protection mechanism even after a system reboot — leaving endpoints exposed to further attacks.
Tamper protection is a vital defense designed to prevent attackers from disabling core security features like real-time protection and threat detection. By exploiting this vulnerability, attackers can effectively “turn off the alarm system,” allowing them to operate undetected within compromised environments.
Affected Products and Impact
| Risk Factors | Details |
|---|---|
| Affected Product | FireEye EDR HX version 10.0.0 |
| Impact | Persistent denial of service; potential data loss from unprocessed events |
| Exploit Prerequisites | Attacker must send a specially crafted tamper protection event to the HX service |
Security experts are especially concerned because the flaw disrupts the processing of all subsequent tamper protection events, creating an enduring security gap that attackers can exploit. Although exploiting the vulnerability requires an in-depth understanding of the HX service and its tamper protection implementation, the potential consequences are severe.
Vendor Response
Trellix, the company that now manages the FireEye product line, has acknowledged the issue and is actively working to release a patch.
Recommendations
Organizations using FireEye EDR HX version 10.0.0 should prioritize applying security updates as soon as patches are released. In the meantime, heightened monitoring and additional endpoint protections are strongly advised to mitigate risk.
