CVE-2026-79977

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 5.9% of scored records. A rank, not a probability.

NVD base score

8.2 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

NVD analysis status

Awaiting Analysis. NVD last modified this record on 2026-10-26.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-10-23 19:56Z5 DAYS AGO

Last updated

2026-10-23 19:56Z5 DAYS AGO

Reserved

2026-08-25

Assigning CNA

zephyr

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Weaknesses

• CWE-306Missing Authentication for Critical FunctionBase
• CWE-346Origin Validation ErrorClass

Data version

5.2

Document digest

89627e38e29d4c9a8d8d2db55d2812b27c301f2a0702c613963075c8ed2eec80

• github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/cbaaf3e9dbe08be21f01bd23142e1ffe91fd4db6patch
• github.comGHSA-w8h4-r8m3-rf5jhttps://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-w8h4-r8m3-rf5j