CVE-2024-51346: Eufy Homebase 2 Information Disclosure Flaw

CVE-2024-51346 Overview

CVE-2024-51346 is a cryptographic vulnerability affecting Eufy Homebase 2 version 3.3.4.1h that allows a local attacker to obtain sensitive information. The flaw resides in the device's cryptographic scheme, which utilizes insufficiently random values (CWE-330), potentially enabling attackers with local access to compromise the confidentiality and integrity of protected data.

Critical Impact

Local attackers can exploit weak cryptographic implementations to extract sensitive information from the Eufy Homebase 2 smart home security hub, potentially compromising the entire connected ecosystem.

Affected Products

• Eufy Homebase 2 version 3.3.4.1h
• Eufy Homebase 2 devices running firmware with the vulnerable cryptographic implementation

Discovery Timeline

• 2026-03-25 - CVE-2024-51346 published to NVD
• 2026-03-25 - Last updated in NVD database

Technical Details for CVE-2024-51346

Vulnerability Analysis

This vulnerability stems from the use of insufficiently random values in the cryptographic scheme employed by the Eufy Homebase 2 device. The Homebase 2 serves as the central hub for Eufy's smart home security ecosystem, managing connections to cameras, sensors, and other security devices. When cryptographic operations rely on predictable or insufficiently random values, attackers can potentially reverse-engineer or predict these values to decrypt protected information.

The local attack vector means an adversary requires some form of access to the device or its network environment. However, the vulnerability does not require any privileges or user interaction to exploit, making it particularly dangerous in scenarios where physical or network access to the device is possible.

Root Cause

The root cause is classified under CWE-330: Use of Insufficiently Random Values. The Eufy Homebase 2 firmware implements a cryptographic scheme that does not generate adequately random values for its security operations. This could manifest in several ways:

• Weak pseudo-random number generation (PRNG) seeding
• Use of predictable values as cryptographic inputs
• Insufficient entropy in key generation or nonce creation

When random values used in cryptographic operations are predictable or can be reproduced, the security guarantees of the encryption are fundamentally undermined.

Attack Vector

The attack requires local access to the Eufy Homebase 2 device or its immediate network environment. An attacker could exploit this vulnerability by:

1. Gaining local network access to communicate with the Homebase 2 device
2. Analyzing the cryptographic scheme to identify weak random value generation
3. Predicting or reproducing the insufficiently random values
4. Using these values to decrypt sensitive information or compromise the cryptographic protections

The vulnerability enables high-impact compromise of both confidentiality and integrity, allowing attackers to potentially access stored credentials, encryption keys, video feeds, or other sensitive data managed by the security hub.

For detailed technical analysis of the cryptographic weakness, refer to the GitHub CVE-2024-51346 Analysis and the Eufy Ecosystem Security Research repository.

Detection Methods for CVE-2024-51346

Indicators of Compromise

• Unexpected network traffic patterns from the Eufy Homebase 2 to unknown destinations
• Evidence of firmware extraction or unauthorized access attempts to the device
• Anomalous authentication events or session activity in connected Eufy devices
• Signs of data exfiltration from the local network segment containing the Homebase 2

Detection Strategies

• Monitor local network traffic for unusual communication patterns involving the Homebase 2 device
• Implement network segmentation to isolate IoT devices and enable focused monitoring
• Deploy endpoint detection solutions capable of identifying cryptographic attack patterns
• Review access logs for the Eufy ecosystem for unauthorized or suspicious activity

Monitoring Recommendations

• Enable logging on network devices to capture traffic to and from the Eufy Homebase 2
• Implement intrusion detection rules for known IoT exploitation techniques
• Regularly audit the firmware version of Eufy devices to ensure timely patching
• Consider deploying SentinelOne Singularity for IoT to gain visibility into smart home device security posture

How to Mitigate CVE-2024-51346

Immediate Actions Required

• Check the current firmware version of your Eufy Homebase 2 device and confirm if version 3.3.4.1h is installed
• Isolate the Eufy Homebase 2 on a separate network segment or VLAN to limit attack surface
• Restrict physical access to the device and its immediate network infrastructure
• Monitor for firmware updates from Eufy that address this cryptographic vulnerability

Patch Information

At the time of publication, no official patch information has been released. Users should monitor the Eufy Official Website and the device's firmware update mechanism for security updates. Given the nature of the cryptographic weakness, a firmware update will be required to implement proper random value generation.

Workarounds

• Implement strict network segmentation to isolate the Eufy Homebase 2 from sensitive network resources
• Use a dedicated IoT network with limited access to other systems and the internet
• Deploy network-level monitoring to detect potential exploitation attempts
• Consider disabling remote access features until a patch is available

# Network segmentation example using iptables
# Isolate IoT devices on a separate subnet (example: 192.168.10.0/24)
iptables -A FORWARD -s 192.168.10.0/24 -d 192.168.1.0/24 -j DROP
iptables -A FORWARD -s 192.168.1.0/24 -d 192.168.10.0/24 -j DROP

# Allow only necessary outbound traffic for Eufy services
iptables -A FORWARD -s 192.168.10.0/24 -p tcp --dport 443 -j ACCEPT
iptables -A FORWARD -s 192.168.10.0/24 -j LOG --log-prefix "IoT-Block: "