CVE-2026-25139

RIOT is an open-source microcontroller operating system, designed to match the requirements of Internet of Things (IoT) devices and other embedded devices. In version 2025.10 and prior, multiple out-of-bounds read allow any unauthenticated user, with ability to send or manipulate input packets, to read adjacent memory locations, or crash a vulnerable device running the 6LoWPAN stack. The received packet is cast into a sixlowpan_sfr_rfrag_t struct and dereferenced without validating the packet is large enough to contain the struct object. At time of publication, no known patch exists.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-c8fh-23qr-97mc	Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:o:riot-os:riot:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-04 18:16

Updated : 2026-02-20 17:08

NVD link : CVE-2026-25139

Mitre link : CVE-2026-25139

CVE.ORG link : CVE-2026-25139

JSON object : View

Products Affected

riot-os

riot

CWE

CWE-125

Out-of-bounds Read

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