CVE-2025-25246 Overview
CVE-2025-25246 is a critical remote code execution (RCE) vulnerability affecting multiple NETGEAR gaming routers, including the XR1000, XR1000v2, and XR500 models. This vulnerability allows unauthenticated remote attackers to execute arbitrary code on vulnerable devices over the network, potentially leading to complete device compromise without requiring any user interaction or credentials.
Critical Impact
Unauthenticated attackers can remotely execute arbitrary code on affected NETGEAR routers, potentially gaining full control over the device, intercepting network traffic, or using the compromised router as a pivot point for further attacks within the network.
Affected Products
- NETGEAR XR1000 firmware versions before 1.0.0.74
- NETGEAR XR1000v2 firmware versions before 1.1.0.22
- NETGEAR XR500 firmware versions before 2.3.2.134
Discovery Timeline
- 2025-02-05 - CVE-2025-25246 published to NVD
- 2025-02-05 - Last updated in NVD database
Technical Details for CVE-2025-25246
Vulnerability Analysis
This vulnerability is classified as CWE-94 (Improper Control of Generation of Code, also known as Code Injection). The flaw resides in the router's web interface or network-accessible service that fails to properly validate or sanitize input before processing it in a code execution context.
The vulnerability is network-accessible, meaning attackers do not need physical access to the device or local network presence to exploit it. While the attack complexity is considered high, the fact that no authentication or user interaction is required makes this a particularly dangerous vulnerability for internet-exposed devices.
Successful exploitation could result in complete confidentiality, integrity, and availability compromise of the affected router. Attackers could potentially intercept and modify network traffic, install persistent backdoors, pivot to attack other devices on the internal network, or recruit the compromised router into a botnet.
Root Cause
The root cause of this vulnerability stems from improper control of code generation (CWE-94). The affected NETGEAR routers contain a code injection vulnerability where user-supplied input is incorporated into dynamically generated code without proper validation or sanitization. This allows attackers to inject and execute malicious code within the context of the vulnerable service, typically running with elevated privileges on the router.
Attack Vector
The attack vector for CVE-2025-25246 is network-based, requiring no authentication or user interaction. An attacker can exploit this vulnerability by sending specially crafted requests to the vulnerable router over the network.
The exploitation process typically involves:
- Identifying a vulnerable NETGEAR router (XR1000, XR1000v2, or XR500 with outdated firmware)
- Crafting a malicious payload that exploits the code injection vulnerability
- Sending the crafted request to the router's network-accessible service
- Achieving arbitrary code execution with the privileges of the vulnerable service
Due to the sensitive nature of this vulnerability and the lack of verified proof-of-concept code, technical exploitation details are intentionally limited. Readers should refer to the Netgear Security Advisory PSV-2023-0039 for additional information.
Detection Methods for CVE-2025-25246
Indicators of Compromise
- Unexpected outbound network connections from the router to unknown IP addresses
- Unusual CPU or memory utilization on the affected router
- Modifications to router configuration or firmware without administrator action
- Presence of unfamiliar processes or services running on the device
- DNS settings changed to point to malicious servers
Detection Strategies
- Monitor network traffic for anomalous requests targeting the router's web management interface or network services
- Implement network segmentation to limit exposure of management interfaces
- Deploy intrusion detection systems (IDS) with signatures for known NETGEAR exploitation patterns
- Regularly audit router configurations for unauthorized changes
Monitoring Recommendations
- Enable logging on the router and forward logs to a central SIEM for analysis
- Monitor for firmware version changes or unexpected device reboots
- Implement network traffic analysis to detect command and control (C2) communications
- Set up alerts for configuration changes on network infrastructure devices
How to Mitigate CVE-2025-25246
Immediate Actions Required
- Update affected NETGEAR routers to the latest firmware immediately: XR1000 to 1.0.0.74 or later, XR1000v2 to 1.1.0.22 or later, XR500 to 2.3.2.134 or later
- Disable remote management features if not required
- Ensure router management interfaces are not exposed to the internet
- Implement network segmentation to isolate router management traffic
- Review router logs for signs of compromise before and after patching
Patch Information
NETGEAR has released firmware updates that address this vulnerability. The patched versions are:
- XR1000: Version 1.0.0.74 or later
- XR1000v2: Version 1.1.0.22 or later
- XR500: Version 2.3.2.134 or later
Firmware updates can be downloaded from the official NETGEAR support website. The security advisory with full details is available at the Netgear Security Advisory PSV-2023-0039.
Workarounds
- Disable remote management access to the router from the WAN interface
- Place the router behind a firewall that blocks unauthorized access to management ports
- Implement access control lists (ACLs) to restrict management access to trusted IP addresses only
- Consider using a VPN for remote administration instead of exposing the management interface directly
# Recommended network hardening steps
# 1. Verify current firmware version through router admin panel
# 2. Download and install latest firmware from NETGEAR support
# 3. Disable remote management in router settings
# 4. Review and restrict port forwarding rules
# 5. Enable logging and forward to central monitoring system
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
