CVE-2025-9557

‭An out-of-bound write can lead to an arbitrary code execution. Even on devices with some form of memory protection, this can still lead to‬ ‭a crash and a resultant denial of service.‬

CVSS 3.1

7.6CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-25)

CWE

CWE-120

Published

2025-11-26

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

References

• https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-r3j3-c5v7-2ppf

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