Cloudanix VulnDB

CVE-2026-13351

High · 7.5

CVSS

7.5

EPSS

0.5%

Published

Jun 25, 2026

CISA due date

—

The record

Zephyr's IPv6 network stack can be prevented from receiving or processing future incoming packets by sending a small number of maliciously fragmented IPv6 packets. When such a packet is handled by the fragment-header processing path, the associated RX network packet buffer (allocated from a memory slab) is not released back to the pool. Repeating the malicious packet exhausts all RX buffer slots, after which the device can no longer obtain RX buffers and stops receiving traffic, resulting in a denial of service.

Affected packages

Ecosystem Package Introduced Fixed

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