CVE-2025-22457 Scanner

Ivanti Connect Secure is widely used in corporate environments to provide secure remote access to internal networks and applications, offering virtual private network (VPN) capabilities and secure web gateways. It is utilized by IT administrators and managers to enforce secure access policies for employees working remotely. Organizations across various industries rely on Ivanti Connect Secure to protect sensitive data and maintain network security. The software is particularly useful for companies with a high number of remote workers, as it enables them to securely connect to the corporate network from anywhere in the world. Additionally, it offers features like dynamic access control and endpoint security to ensure that only authorized users and devices can access the network. Companies often choose Ivanti Connect Secure for its robust security features and easy integration with existing IT infrastructure.

The Buffer Overflow vulnerability in Ivanti Connect Secure occurs due to improper input handling, which allows remote attackers to execute arbitrary code on the affected systems. This type of attack takes advantage of overflowed buffer memory, potentially leading to the execution of harmful code. The vulnerability exists in versions before 22.7R2.6, and it can be exploited remotely without authentication. This makes it particularly dangerous as attackers can exploit this vulnerability to gain unauthorized access to the affected systems. The severity of this vulnerability is critical as it can compromise the entire network's security, allowing attackers to infiltrate and manipulate network resources.

Technically, the vulnerability is rooted in a stack-based buffer overflow due to improper handling of inputs in the system. The exploit involves sending a specially crafted request with excessively large input data to the Ivanti Connect Secure application, causing the buffer to overflow. The vulnerable endpoint is accessible remotely, something that attackers can leverage without the need for valid credentials. When the large payload is processed, it overwrites adjacent memory, potentially allowing execution of arbitrary code embedded in the malicious request. This highlights a critical flaw in the software's input validation process, which needs rectification to prevent exploitation. The vulnerability is detected through sending an X-Forwarded-For header with an oversized value to test the buffer handling.

If exploited, this vulnerability can have severe repercussions. Successful exploitation can lead to remote code execution, giving attackers control over the affected systems. This could result in unauthorized access to sensitive data, complete takeover of network systems, and further propagation of malicious software across connected devices. Additionally, attackers could manipulate network traffic, disrupt services, or deploy ransomware, demanding payment for restoring access. Organizations might face significant financial losses, reputational damage, and legal liabilities due to data breaches. Moreover, a compromised system could be used as a launch point for further attacks within the network.

REFERENCES

• https://labs.watchtowr.com/is-the-sofistication-in-the-room-with-us-x-forwarded-for-and-ivanti-connect-secure-cve-2025-22457
• https://www.cvedetails.com/cve/CVE-2025-22457
• https://github.com/securekomodo/CVE-2025-22457