Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-1679
zephyrproject-rtos Zephyr — net: eswifi socket send payload length not bounded
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H H H 7.8 .0022 11.1 —
AFFECTED
Product Versions Fixed
Zephyr unspecified —
TIMELINE
Jan 30 Reserved by zephyr
Mar 27 Published (CNA: zephyr)
Oct 15 EXPLOIT PUBLISHED — CVE-2026-1679 (zephyrproject-rtos Zephyr). Public exploit reference added.
Oct 15 RESCORED — CVE-2026-1679 (zephyrproject-rtos Zephyr). CVSS 7.3 → 7.8 (NVD).
Description
The eswifi socket offload driver copies user-provided payloads into a fixed buffer without checking available space; oversized sends overflow `eswifi->buf`, corrupting kernel memory (CWE-120). Exploit requires local code that can call the socket send API; no remote attacker can reach it directly.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| January 30, 2026 | Reserved | Reserved by zephyr |
| March 27, 2026 | Published | Published (CNA: zephyr) |
| October 15, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-1679 (zephyrproject-rtos Zephyr). Public exploit reference added. |
| October 15, 2026 | RESCORED | RESCORED — CVE-2026-1679 (zephyrproject-rtos Zephyr). CVSS 7.3 → 7.8 (NVD). |
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-2026-1679 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 Monday, October 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.
