Vulnerability · Published May 12, 2026 · Assigned by zephyr
CVE-2026-1681net: Stack Overflow with Ping (to own IP Address) via Shell
Medium 6.1
In plain English
A medium-severity security flaw in Zephyr from zephyrproject-rtos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Official description
Issuing an ICMP ping via the `net ping` shell command to a device's own IPv4 address causes the network stack to recursively re-enter the input path on the same system work-queue stack. Because the destination is recognized as a local address, both the echo request and the resulting echo reply are processed inline before the current frame returns. The nested input-path frames exceed the work-queue stack and trigger a stack overflow.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| zephyrproject-rtos | Zephyr | * – before 4.4.0 |
Weakness: CWE-674 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H