PT-2026-6269 · Riot · Riot

Pamusuo · Published 2026-02-04 · Updated 2026-02-04 · CVE-2026-25139

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions RIOT versions 2025.10 and prior

Description The RIOT operating system, designed for IoT and embedded devices, contains an issue where out-of-bounds read operations can occur. An unauthenticated user capable of sending or manipulating input packets can potentially read adjacent memory locations or cause a device crash when using the 6LoWPAN stack. This happens because a received packet is cast into a sixlowpan sfr rfrag t struct and then dereferenced without verifying the packet size is sufficient to contain the struct.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-25139

GHSA-C8FH-23QR-97MC

Affected Products

Riot

References · 5

• 🔥 https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-c8fh-23qr-97mc · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25139.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-25139 · Security Note
• https://osv.dev/vulnerability/CVE-2026-25139 · Vendor Advisory
• https://twitter.com/VulmonFeeds/status/2019137075841262035 · Twitter Post