Hackers exploit FortiClient EMS flaw to push infostealer malware

BleepingComputer

May 28, 2026 at 5:25 PM

Actively Exploited

Overview

Hackers are exploiting a vulnerability in FortiClient Enterprise Management Server (EMS), identified as CVE-2026-35616, which allows them to bypass authentication. This flaw is being used to deliver a credential-stealing malware known as EKZ. Organizations using FortiClient EMS are at risk, as attackers can gain unauthorized access to sensitive information through this exploit. The situation is concerning since the malware targets credentials, potentially leading to further data breaches. Companies should prioritize patching this vulnerability to protect their systems and data from compromise.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: FortiClient Enterprise Management Server (EMS)
Action Required: Organizations should apply the latest security patches for FortiClient EMS to address CVE-2026-35616.
Timeline: Newly disclosed

Original Article Summary

Hackers are exploiting an authentication bypass vulnerability (CVE-2026-35616) in FortiClient Enterprise Management Server (EMS) to deliver an undocumented credential stealer called EKZ. [...]

Impact

FortiClient Enterprise Management Server (EMS)

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Organizations should apply the latest security patches for FortiClient EMS to address CVE-2026-35616. Regularly updating software and monitoring systems for unusual activity are also recommended to mitigate risks.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Exploit, Vulnerability, and 1 more.

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