CVE-2025-9242 Scanner

WatchGuard Fireware OS is a network operating system widely used in network security devices such as firewalls and VPNs. It provides features like intrusion prevention, VPN gateways, and malware protection suitable for enterprise-level security. Administered by IT professionals, it aims to secure networks from unauthorized access and cyber threats. Regular updates and patches are crucial to maintaining its security and functionality. Organizations across different industries, including healthcare and finance, rely on it to protect sensitive data. Its robustness and scalability make it a preferred choice for network protection in complex environments.

The Remote Code Execution (RCE) vulnerability allows attackers to execute arbitrary code on a vulnerable system, leading to potential full system compromise. This vulnerability arises from improper handling when using IKEv2 dynamic gateway peer within the VPN configurations. An RCE vulnerability poses significant risks, allowing unauthorized remote attackers to gain control over the affected system. This vulnerability can be especially dangerous as it can be exploited without authentication. Addressing such vulnerabilities promptly is critical to preventing malicious attacks and maintaining system integrity.

The vulnerability specifically targets the IKEv2 protocol implementation in the affected versions of WatchGuard Fireware OS. An out-of-bounds write occurs due to improper handling, which can be triggered by remote, unauthenticated attackers. Exploiting this vulnerability requires sending specially crafted packets to the VPN service with IKEv2. The vulnerable endpoint is the VPN interface configured for dynamic gateway peer connections. Successful exploitation allows attackers to execute arbitrary code, potentially leading to full control over the device.

If this vulnerability is exploited, malicious actors could execute arbitrary code, compromising the entire system's security. This could lead to unauthorized data access, data loss, or system downtime. Additionally, the attacker might install backdoors or malware, further endangering network security. The organization's reputation and compliance status could also be at risk due to exposure to such vulnerabilities. Therefore, timely patching and regular security assessments are essential to prevent potential exploits.

REFERENCES

• https://github.com/watchtowrlabs/watchTowr-vs-WatchGuard-CVE-2025-9242/
• https://labs.watchtowr.com/yikes-watchguard-fireware-os-ikev2-out-of-bounds-write-cve-2025-9242