CVE-2026-102693
9.6CriticalPublished 16 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-120, CWE-121
Impact
Nearby attackers within Wi-Fi range can trigger memory corruption, crashes, or arbitrary code execution without authentication. They only need to broadcast a malformed or oversized SSID while the target device scans for Wi-Fi networks.
Root cause
The ATWINC15x0 driver's _atwinc15x0_sta_set_current_ssid function uses an unbounded strcpy to copy scanned SSIDs into a fixed-size buffer.
Affected systems
RIOT OS prior to version 2026.04 with MODULE_ATWINC15X0_DYNAMIC_CONNECT enabled
CVSS v3.1 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Fix & remediation
Upgrade RIOT OS to version 2026.04 or rebuild firmware with the fix. If updating immediately is not possible, disable MODULE_ATWINC15X0_DYNAMIC_CONNECT in your build configuration.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.04, the ATWINC15x0 driver's _atwinc15x0_sta_set_current_ssid function uses strcpy to copy an SSID without checking the destination size. When MODULE_ATWINC15X0_DYNAMIC_CONNECT is enabled, a nearby attacker can advertise a malformed or oversized SSID that is processed during Wi-Fi scanning, causing memory corruption and potentially a hard fault, denial of service, or code execution. This issue is fixed in version 2026.04.