Preface: Mercedes-Benz has integrated the Snapdragon Auto 5G Modem-RF platform directly into its newest vehicle architectures.
Porsche relies on Qualcomm hardware through a long-term, group-wide technology agreement between its parent company, the Volkswagen Group, and Qualcomm.
Ref: Qualcomm notified customers of a product design weakness (CVE-2026-25289) on May 4, 2026. The issue has been resolved.
Background: The Neighborhood Area Network (NAN) acts as the vital communication bridge in the middle of the smart grid. It links local smart meters to the central Wide Area Network (WAN).
Role and Function Data link: Connects home meters to utility control centers.
Two-way flow: Sends use data out and brings power rules in.
Grid support: Helps manage power use and check system health.
While ZigBee itself is rarely used in moving vehicles (due to handover and speed limitations), it is used to offload data from expensive 4G/5G networks for real-time monitoring using low-cost, low-power neighborhood networks (NANs). Instead of ZigBee, the automotive industry uses specialized low-cost, short-range wireless standards to build these neighborhood-level car networks. This is known as V2V (Vehicle-to-Vehicle) or V2I (Vehicle-to-Infrastructure) communication. They use DSRC (Dedicated Short-Range Communications) or ITS-G5 (which are based on IEEE 802[.]11p, a modified version of Wi-Fi), and more recently, PC5 / Sidelink C-V2X. When cars are stuck in traffic, parked in a residential neighborhood, or stopped at a red light, they form an ad-hoc local network (a NAN).
For Wi-Fi Neighbor Awareness Networking (NAN) / Wi-Fi Aware, management and service discovery frames do not have a single fixed “default” byte size. Instead, they rely on variable-length attribute payloads governed by the standard maximum IEEE 802[.]11 frame body limit of 2,304 bytes (and up to 2,346 total frame bytes including MAC headers).
Vulnerability details: CVE-2026-25289 is a stack-based buffer overflow / memory corruption flaw that occurs when processing “Device Capability Extended” attributes inside Neighbor Awareness Networking (NAN) service discovery frames. The vulnerability triggers when the parsing code blindly trusts an attacker-controlled length field from an incoming frame and copies data into a fixed-size stack buffer without verification.
Remedy: To mitigate CVE-2026-25289, you must apply the official August 2026 security patch or newer from your device vendor (such as updating Android or Qualcomm WLAN firmware components).
Official announcement: Please refer to the link for details – https://nvd.nist.gov/vuln/detail/CVE-2026-25289