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  4. CVE 2026 102693 riot remote stack buffer overflow in atwinc15x0
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Back to active CVEs
Critical · CVSS 9.6CVE-2026-102693

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

Answer in brief

CVE-2026-102693 records a Critical severity (CVSS 9.6) vulnerability in RIOT: Remote Stack Buffer Overflow in ATWINC15x0 driver via unsanitized SSID. The current sources do not mark it as known exploited. The current feed maps RIOT-OS/RIOT (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 16, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 9.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps RIOT-OS/RIOT (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
RIOT-OS/RIOTgeneric<2026.042026.04

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for RIOT-OS/RIOT.
  2. 2Review the reported fix. Update RIOT-OS/RIOT to 2026.04 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Netcore NR256CN through 1.5.140116 Pre-Auth Stack Overflow via Boa user_ok()Also CWE-121
  • IBM i is Affected by a Denial of Service in Digital Certificate ManagerSame generic ecosystem
  • IBM Db2 Genius Hub Improper verification of cryptographic signatureSame generic ecosystem
  • Ekko Studio through 0.7.36 Missing Authorization via /api/auth/locked-ipsSame generic ecosystem
  • APIPark through 1.9.7-beta Cross-Team Authorization Bypass via Team Query ParameterSame generic ecosystem
  • EFAK through 5.1.0 Privilege Escalation via /api/users REST APISame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-120, CWE-121
Source
CVE List V5
Source checked
Oct 16, 2026
References
3 linked sources
Open source record