Vulnerability details
CVE-2026-102693
RIOT-OS RIOT
RIOT: Remote Stack Buffer Overflow in ATWINC15x0 driver via unsanitized SSID
CVSS 3.1
9.6Critical
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.6Critical | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| RIOT-OS | RIOT | < 2026.04 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-gwgv-6976-hxrg x_refsource_CONFIRM
- https://github.com/RIOT-OS/RIOT/commit/5209c1b84f9771342f079b7d5d94d8207fdd5f0a x_refsource_MISC
- https://github.com/RIOT-OS/RIOT/releases/tag/2026.04 x_refsource_MISC
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Details
- Published
- 2026-10-16
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- GitHub_M
- Kolun priority
- 18 · Low
Exploit prediction (EPSS)
0.22%
Probability of exploitation in 30 days
13.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
- CWE-121Stack-based Buffer Overflow