What’s Vulnerable › Vulnerabilities

CVE-2026-102693: RIOT: Remote Stack Buffer Overflow in ATWINC15x0 driver via unsanitized SSID

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-16
• Weakness: CWE-120

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.

Affected products

• RIOT-OS RIOT: before 2026.04

References

• https://github.com/RIOT-OS/RIOT/commit/5209c1b84f9771342f079b7d5d94d8207fdd5f0a
• https://github.com/RIOT-OS/RIOT/releases/tag/2026.04
• https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-gwgv-6976-hxrg

Get alerted when CVE-2026-102693 or the next vulnerability affects your stack