CVE-2026-81039

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.20% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 10.8% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2026-10-26 16:08Z2 DAYS AGO

Last updated

2026-10-26 17:37Z2 DAYS AGO

Reserved

2026-08-26

Assigning CNA

zephyr

Record state

PUBLISHED

Severity

Medium (CVSS 4.3)

CNA CVSS vector

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

Weaknesses

• CWE-772Missing Release of Resource after Effective LifetimeBase

Data version

5.2

Document digest

8b993cb0e7e05bd9fecf4ce3209288655644c97b004a16217a66e91f274bbaf6

• github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/b6a5e6e8aa9072a10a52420095af2d99f04d71fcpatch
• github.comGHSA-5jw9-rp59-ch2qhttps://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-5jw9-rp59-ch2q