{"id":"CVE-2026-102693","title":"RIOT: Remote Stack Buffer Overflow in ATWINC15x0 driver via unsanitized SSID","summary":"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 w…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-120","CWE-121"],"vendor":"RIOT-OS","product":"RIOT","affected":["RIOT < 2026.04"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:22:51.330478Z"},"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:23:03.423Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102693","references":[{"url":"https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-gwgv-6976-hxrg","label":"https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-gwgv-6976-hxrg"},{"url":"https://github.com/RIOT-OS/RIOT/commit/5209c1b84f9771342f079b7d5d94d8207fdd5f0a","label":"https://github.com/RIOT-OS/RIOT/commit/5209c1b84f9771342f079b7d5d94d8207fdd5f0a"},{"url":"https://github.com/RIOT-OS/RIOT/releases/tag/2026.04","label":"https://github.com/RIOT-OS/RIOT/releases/tag/2026.04"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T17:24:46.894Z","slug":"CVE-2026-102693","body":"## Overview\n\nRIOT 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.\n\n## Affected\n\n- `RIOT < 2026.04`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}