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MediumSplunk security contentNasreddine Bencherchali +2

Cisco Secure Firewall - React Server Components RCE Attempt

This analytic detects exploitation activity of CVE-2025-55182 using Cisco Secure Firewall Intrusion Events. It leverages Cisco Secure Firewall Threat Defense IntrusionEvent logs to identify cases where Snort…

Description

This analytic detects exploitation activity of CVE-2025-55182 using Cisco Secure Firewall Intrusion Events. It leverages Cisco Secure Firewall Threat Defense IntrusionEvent logs to identify cases where Snort signature 65554 (React Server Components remote code execution attempt) is triggered If confirmed malicious, this behavior could be indicative of a potential exploitation of CVE-2025-55182.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
cisco_secure_firewall_threat_defense_intrusion_event

Known benign triggers

  • Security testing or vulnerability scanners might trigger this. Investigate any potential matches to determine if they're legitimate.

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