CVE-2025-69822: Atomberg Erica Fan Privilege Escalation

CVE-2025-69822 Overview

A vulnerability has been identified in the Atomberg Erica Smart Fan Firmware Version V1.0.36 that allows an attacker within adjacent network proximity to obtain sensitive information and escalate privileges. The vulnerability is triggered via crafted deauthentication (deauth) frames, exploiting weaknesses in the device's wireless authentication handling mechanism. This IoT firmware vulnerability falls under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor).

Critical Impact

Attackers within wireless range can force device disconnection, intercept sensitive information during reconnection, and potentially escalate privileges on the affected smart fan system.

Affected Products

• Atomberg Erica Smart Fan Firmware Version V1.0.36

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-69822 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-69822

Vulnerability Analysis

This vulnerability affects the wireless communication layer of the Atomberg Erica Smart Fan, a consumer IoT device. The firmware lacks adequate protection against deauthentication frame attacks, a well-known technique used to disrupt Wi-Fi connections. When an attacker sends crafted deauth frames to the device, it forces disconnection from the wireless network.

The attack is accessible from the adjacent network, meaning an attacker must be within wireless range of the target device. No authentication or user interaction is required to exploit this vulnerability, making it particularly dangerous in shared environments such as apartment buildings or offices where smart home devices are deployed.

The information disclosure aspect allows attackers to capture sensitive data during the reconnection handshake process. Combined with the privilege escalation capability, this vulnerability could enable an attacker to gain unauthorized control over the smart fan's operational parameters or pivot to other connected devices on the same network.

Root Cause

The root cause of this vulnerability is improper handling of IEEE 802.11 management frames, specifically deauthentication frames, in the device's Wi-Fi stack. The firmware does not implement adequate protections such as Management Frame Protection (MFP/802.11w), allowing unauthenticated deauth frames to be processed and acted upon. Additionally, sensitive information may be exposed during the network reconnection process, compounding the security risk.

Attack Vector

The attack requires the adversary to be within adjacent network (wireless) range of the target Atomberg Erica Smart Fan. The attack proceeds as follows:

1. The attacker identifies the smart fan's wireless MAC address by monitoring network traffic
2. Crafted deauthentication frames are transmitted targeting the device, forcing it to disconnect from its configured Wi-Fi network
3. During the reconnection attempt, the attacker can capture sensitive information from the authentication handshake
4. The captured data may enable privilege escalation, allowing unauthorized control of the device

This attack requires no privileges and no user interaction, though it requires physical proximity to the target device's wireless network.

Detection Methods for CVE-2025-69822

Indicators of Compromise

• Unusual frequency of device disconnections and reconnections observed in network logs
• Presence of deauthentication frame floods targeting specific MAC addresses in wireless monitoring
• Unexpected changes to smart fan configuration or operational parameters
• Anomalous authentication attempts from unrecognized devices during fan reconnection events

Detection Strategies

• Deploy wireless intrusion detection systems (WIDS) capable of detecting deauthentication frame attacks
• Monitor network logs for repeated disconnection patterns from IoT devices
• Implement network segmentation to isolate IoT devices and enable focused monitoring
• Enable logging on wireless access points to capture management frame activity

Monitoring Recommendations

• Regularly review Wi-Fi controller or access point logs for deauth frame activity
• Set up alerts for IoT device connectivity anomalies
• Consider deploying sensors to detect rogue wireless activity near critical IoT deployments
• Maintain an inventory of IoT devices and monitor for unauthorized configuration changes

How to Mitigate CVE-2025-69822

Immediate Actions Required

• Isolate affected Atomberg Erica Smart Fan devices on a dedicated IoT network segment
• Enable Management Frame Protection (802.11w) on your wireless infrastructure if supported
• Monitor for suspicious wireless activity targeting the device's MAC address
• Consider temporarily disconnecting the device from the network until a patch is available

Patch Information

At the time of publication, no vendor patch has been confirmed for firmware version V1.0.36. Users should monitor for firmware updates from Atomberg and apply them as soon as they become available. For additional technical details, refer to the GitHub CVE-2025-69822 Security Assessment and the Security Assessment Report PDF.

Workarounds

• Implement network segmentation to isolate smart fan devices from critical network assets
• Enable 802.11w (Protected Management Frames) on your wireless access point to mitigate deauth attacks
• Use a dedicated IoT VLAN with restricted internet access and no lateral movement to other network segments
• Consider using wired connectivity alternatives if available for critical smart home infrastructure

# Example: Enable 802.11w Protected Management Frames (hostapd configuration)
# Add the following to your hostapd.conf to help mitigate deauth attacks
ieee80211w=2
# 0 = disabled, 1 = optional, 2 = required