CVE-2026-18747

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

0.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 1.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/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 2026-09-30.

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

2026-09-28 23:25Z1 MO AGO

Last updated

2026-09-30 13:44Z28 DAYS AGO

Reserved

2026-08-03

Assigning CNA

zephyr

Record state

PUBLISHED

Severity

Medium (CVSS 6.8)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase
• CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

8d43f5817e74b4295c895b2f839370a504c7dd59af0a25ad2fda5ae4dd140663

• github.comFix commithttps://github.com/zephyrproject-rtos/zephyr/commit/f7fc3e779a59c68c96eaf63a6b03ac7489f5e4a5patch
• github.comGHSA-g6cx-xj75-hvfwhttps://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g6cx-xj75-hvfw