Hackers now exploit critical F5 BIG-IP flaw in attacks, patch now

BleepingComputer

March 30, 2026 at 10:59 AM

Actively Exploited

Exploit Vulnerability Patch RCE Critical F5

Overview

F5 Networks has escalated the severity of a vulnerability in its BIG-IP Application Policy Manager (APM) from a denial-of-service issue to a critical remote code execution flaw. This vulnerability allows attackers to exploit unpatched devices and deploy webshells, which can give them unauthorized access to systems. Organizations using affected versions of BIG-IP are urged to apply the necessary patches immediately to prevent potential breaches. The exploitation of this flaw poses a significant risk, especially for businesses relying on BIG-IP for application delivery and security. With reports of active attacks already in progress, it is crucial for users to take swift action to secure their environments.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: F5 BIG-IP APM
Action Required: Users should patch their systems to the latest version as specified by F5 to mitigate this vulnerability.
Timeline: Newly disclosed

Original Article Summary

F5 has reclassified a BIG-IP APM denial-of-service (DoS) vulnerability as a critical-severity remote code execution (RCE) flaw, warning that attackers are exploiting it to deploy webshells on unpatched devices. [...]

Impact

F5 BIG-IP APM

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

Users should patch their systems to the latest version as specified by F5 to mitigate this vulnerability.

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 Exploit, Vulnerability, Patch, and 3 more.

Read Original Article

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