PT-2026-2322 · Riot-Os · Riot-Os

Ron Edgerson · Published 2026-01-12 · Updated 2026-01-21 · CVE-2026-22213

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions RIOT OS versions up to and including 2026.01-devel-317

Description RIOT OS versions up to and including 2026.01-devel-317 have a stack-based buffer overflow issue in the tapslip6 utility. This is due to unsafe string concatenation within the devopen() function. The utility utilizes strcpy() and strcat() to combine a fixed prefix '/dev/' with a user-provided device name from the -s command-line option without sufficient bounds checking. An attacker can provide a device name that is excessively long, causing a stack buffer overflow, which can lead to process crashes and memory corruption.

Recommendations Update to a version of RIOT OS newer than 2026.01-devel-317.

Exploit

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-22213

Affected Products

Riot-Os

References · 9

• 🔥 https://seclists.org/fulldisclosure/2026/Jan/15 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-22213 · Security Note
• https://osv.dev/vulnerability/CVE-2026-22213 · Vendor Advisory
• https://github.com/RIOT-OS/RIOT · Note
• https://vulncheck.com/advisories/riot-os-stack-based-buffer-overflow-in-tapslip6-utility · Note
• https://twitter.com/CVEnew/status/2010859149568196609 · Twitter Post
• https://t.me/cveNotify/149425 · Telegram Post
• https://riot-os.org · Note
• https://twitter.com/VulmonFeeds/status/2010893882549035517 · Twitter Post