Critical RCE flaw impacts over 115,000 WatchGuard firewalls

BleepingComputer

December 22, 2025 at 9:00 AM

Actively Exploited

Overview

A serious remote code execution (RCE) vulnerability has been discovered in WatchGuard Firebox devices, impacting over 115,000 units that are currently exposed online. Attackers are actively exploiting this flaw, which allows them to execute arbitrary code on the affected firewalls. This vulnerability poses a significant risk to organizations using these devices, as it could lead to unauthorized access and control over network resources. Users of WatchGuard Firebox products are urged to take immediate action to protect their systems. The urgency of addressing this issue is heightened by the active nature of the exploitation, making it critical for companies to ensure their devices are patched as soon as possible.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: WatchGuard Firebox devices
Action Required: Users should apply available patches from WatchGuard for their Firebox devices to mitigate the vulnerability.
Timeline: Newly disclosed

Original Article Summary

Over 115,000 WatchGuard Firebox devices exposed online remain unpatched against a critical remote code execution (RCE) vulnerability actively exploited in attacks. [...]

Impact

WatchGuard Firebox devices

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 apply available patches from WatchGuard for their Firebox devices to mitigate the vulnerability. Regularly check for updates and ensure that all firmware is up to date to protect against potential exploits.

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 Vulnerability, RCE, Critical.

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