CVE-2025-22457: Ivanti Connect Secure RCE Vulnerability

CVE-2025-22457 Overview

A stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6, Ivanti Policy Secure before version 22.7R1.4, and Ivanti ZTA Gateways before version 22.8R2.2 allows a remote unauthenticated attacker to achieve remote code execution.

Critical Impact
This vulnerability can lead to complete compromise of the affected systems if exploited.

Affected Products

Ivanti Connect Secure
Ivanti Policy Secure
Ivanti Zero Trust Access Gateway

Discovery Timeline

Not Available - Vulnerability discovered by Not Available
Not Available - Responsible disclosure to Ivanti
Not Available - CVE CVE-2025-22457 assigned
Not Available - Ivanti releases security patch
2025-04-03 - CVE CVE-2025-22457 published to NVD
2025-10-24 - Last updated in NVD database

Technical Details for CVE-2025-22457

Vulnerability Analysis

This vulnerability manifests as a stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6. By sending specially crafted network packets, an attacker can exploit the overflow to execute arbitrary code remotely.

Root Cause

The root cause is improper bounds checking of user-supplied input, leading to stack overflow conditions in affected components.

Attack Vector

The attack vector is network-based, allowing remote exploitation without authentication.

// Example exploitation code (sanitized)
buffer = "A" * 2048; // Overflow the buffer by writing beyond its boundary
send(network_socket, buffer, length(buffer), 0);

Detection Methods for CVE-2025-22457

Indicators of Compromise

Unexpected application crashes
Suspicious network traffic patterns
Changes in system configurations

Detection Strategies

Security teams should implement network-based intrusion detection systems (NIDS) to identify anomalous traffic patterns that could indicate attempted exploits. Log analysis tools should monitor for application crashes or errors linked to Ivanti Connect Secure processes.

Monitoring Recommendations

Regularly monitor system and network logs for signs of exploitation attempts, such as irregular network connections and application errors related to buffer handling.

How to Mitigate CVE-2025-22457

Immediate Actions Required

Disable the vulnerable services temporarily
Apply network segmentation to isolate vulnerable systems
Conduct a full security audit of affected infrastructure

Patch Information

Ivanti has released patches in version 22.7R2.6 for Connect Secure, 22.7R1.4 for Policy Secure, and 22.8R2.2 for ZTA Gateways. Ensure systems are updated to these versions or higher.

Workarounds

Utilize network-based access controls to restrict unauthorized access to services running Ivanti Connect Secure.

bash

# Configuration example
iptables -A INPUT -p tcp --dport <vulnerable_port> -j DROP