CVE-2026-22211

TinyOS versions up to and including 2.1.2 contain a global buffer overflow vulnerability in the printfUART formatted output implementation used within the ZigBee / IEEE 802.15.4 networking stack. The implementation formats output into a fixed-size global buffer and concatenates strings for %s format specifiers using strcat() without verifying remaining buffer capacity. When printfUART is invoked with a caller-controlled string longer than the available space, the unbounded sprintf/strcat sequence writes past the end of debugbuf, resulting in global memory corruption. This can cause denial of service, unintended behavior, or information disclosure via corrupted adjacent global state or UART output.

CVSS

No CVSS.

References

Link	Resource
https://github.com/tinyos/tinyos-main
https://seclists.org/fulldisclosure/2026/Jan/14
https://www.vulncheck.com/advisories/tinyos-global-buffer-overflow-in-printfuart

Configurations

No configuration.

History

No history.

Information

Published : 2026-01-14 16:15

Updated : 2026-01-14 16:25

NVD link : CVE-2026-22211

Mitre link : CVE-2026-22211

CVE.ORG link : CVE-2026-22211

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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