Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
zephyrproject-rtos Zephyr — net: Maliciously fragmented IPv6 packets can prevent receiving/processing future incoming packets
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U N N H 7.5 .0032 25.3 —
AFFECTED
Product Versions Fixed
Zephyr unspecified —
TIMELINE
Jun 25 EXPLOIT PUBLISHED — CVE-2026-13351 (zephyrproject-rtos Zephyr). Public exploit reference added.
Jun 25 Reserved by zephyr
Jun 25 Published (CNA: zephyr)
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| June 25, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-13351 (zephyrproject-rtos Zephyr). Public exploit reference added. |
| June 25, 2026 | Reserved | Reserved by zephyr |
| June 25, 2026 | Published | Published (CNA: zephyr) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| zephyrproject-rtos | Zephyr | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-13351 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.