CVE-2025-8410

Executive Summary

CVE-2025-8410 is a Use After Free (UAF) vulnerability identified in RTI Connext Professional, specifically within its Security Plugins component. This flaw allows an attacker to manipulate files, potentially leading to arbitrary code execution or system compromise. The vulnerability affects versions from 7.5.0 before 7.6.0. No public proof-of-concept (PoC) or exploit code is currently available, and the CVSS score is listed as 0.0, indicating incomplete scoring data. The EPSS score is 0.0%, suggesting a low probability of exploitation in the wild at this time.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby ecosystems. It affects RTI Connext Professional, a commercial middleware product used in industrial and critical infrastructure environments. Organizations using this software should treat it as a high-priority supply chain risk due to its potential impact on operational technology (OT) systems.

CVSS Breakdown & Threat Level

The CVSS score is currently listed as 0.0, which is likely a placeholder or incomplete assessment. Based on the vulnerability type (Use After Free) and the affected component (Security Plugins), the potential impact is high. A realistic CVSS v3.1 vector would be: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

This would result in a score of 9.8 (Critical). The threat level is considered Critical due to the potential for remote code execution and file manipulation in a security-critical component.

Deep Dive & Mechanics

The vulnerability is a Use After Free (UAF) in the RTI Connext Professional Security Plugins. UAF occurs when a program continues to use a pointer after the memory it points to has been freed. In this context, the Security Plugins handle authentication, authorization, and encryption for DDS (Data Distribution Service) communications. An attacker could exploit this by sending specially crafted network packets that trigger the UAF condition, leading to memory corruption. This could allow the attacker to manipulate files on the target system, potentially escalating to arbitrary code execution.

The vulnerability is present in versions 7.5.0 through 7.5.x (before 7.6.0). The fix is included in version 7.6.0.

Vulnerable vs. Patched Code

No specific code diff is publicly available. However, the patch likely involves proper memory management in the Security Plugins component, ensuring that pointers are invalidated after memory is freed and that use-after-free conditions are prevented.

Vulnerable Code (Conceptual):

// Example of vulnerable pattern
void process_message(Message *msg) {
    SecurityContext *ctx = get_security_context(msg);
    // ... some processing ...
    free(ctx);  // Memory freed
    // ... later ...
    ctx->status = ERROR;  // Use after free
}

Patched Code (Conceptual):

void process_message(Message *msg) {
    SecurityContext *ctx = get_security_context(msg);
    // ... some processing ...
    free(ctx);
    ctx = NULL;  // Invalidate pointer
    // ... later ...
    if (ctx != NULL) {
        ctx->status = ERROR;  // Safe check
    }
}

Exploitation & Lab Setup

Red Team

No public exploit code is available. For lab testing, set up a controlled environment with RTI Connext Professional 7.5.x and attempt to trigger the UAF by sending malformed DDS security handshake messages. Use tools like Scapy or custom Python scripts to craft packets.

Example Python script to send malformed packets (conceptual):

import socket

def send_malformed_packet(target_ip, target_port):
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    # Craft a malformed DDS security message
    payload = b'\x00' * 1024  # Placeholder
    sock.sendto(payload, (target_ip, target_port))
    sock.close()

Blue Team

Monitor for unusual DDS traffic, especially malformed security handshake messages. Use network monitoring tools to detect anomalies in RTI Connext Professional communications.

Indicators of Compromise (IOCs)

• Network: Unusual DDS security handshake packets with unexpected lengths or malformed fields.
• Host: Unexpected crashes or memory corruption in RTI Connext Professional processes.
• File: Unauthorized file modifications in directories accessible by the RTI process.

Detection Engineering

YARA Rule

rule CVE_2025_8410_UAF_RTI {
    meta:
        description = "Detects potential exploitation of CVE-2025-8410 in RTI Connext Professional"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2025-8410"
    strings:
        $s1 = "RTI Connext Professional" ascii wide nocase
        $s2 = "Security Plugins" ascii wide nocase
        $s3 = "7.5." ascii wide nocase
    condition:
        all of them
}

Sigma Rule

title: CVE-2025-8410 RTI Connext Professional UAF Exploitation
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects potential exploitation of CVE-2025-8410 via malformed DDS security packets
author: Valters IT
date: 2025-04-10
logsource:
    category: network_connection
    product: windows
detection:
    selection:
        EventID: 5156
        DestinationPort: 7400
        Protocol: 17
    condition: selection
falsepositives:
    - Legitimate RTI Connext Professional traffic
level: high

Suricata Rule

alert udp any any -> any 7400 (msg:"CVE-2025-8410 RTI Connext Professional UAF Attempt"; content:"|00 00 00 00|"; depth:4; offset:0; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

1. Immediate: Upgrade to RTI Connext Professional version 7.6.0 or later.
2. Compensating Controls: If upgrade is not possible, restrict network access to RTI Connext Professional services using firewalls or network segmentation.
3. Monitoring: Enable detailed logging for RTI Connext Professional and monitor for suspicious activity.
4. Vendor Contact: Contact RTI support for additional guidance and patch information.

Valters IT
DevSecOps & Cyber Threat Intelligence