CVE-2026-79977: zephyr 4.4.0 through 4.4.2

CVE-2026-79977. CVSS 3.1 base score 8.2 (HIGH, Vendor/CNA).

Affected technology

zephyr · 4.4.0 through 4.4.2
zephyrproject

Component: Not specified by the source
Function: handle_transport_data

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The attacker can also relay the redirected initiations to the real peer to place itself in the path of the tunnel, observing ciphertext and traffic metadata and selectively dropping packets. Vendor/CNA’s CVSS 3.1 assessment (base score 8.2/10) rates confidentiality impact as low; integrity impact as none; availability impact as high.

Published 24-Oct-2026 01:43 UTC

CWE: CWE-306, CWE-346
CCR priority: 32.8 /100 (P4)
CVSS 3.1: 8.2 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H · Vendor/CNA
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-24 01:40:49.068977+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-79977.html