CVE-2026-13351
HIGH
MEDIUM
Priority: 0.04
BB Relevance:
75/100
Published: 2026-06-25
Modified: 2026-10-25
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| zephyrproject | zephyr | < 4.4.1 |
References & Advisories (1)
Exploit
Patch
Vendor Advisory