CVE-2026-1681
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
ProductZephyr
PublishedMay 12, 2026
First seenMay 12, 2026
Weakness typeCWE-674CWE-674
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zephyrproject zephyr | v ≤ 4.3.0 | — |
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