CVE-2026-77237

MEDIUM 6.5

Missing type validation in xQueueAddToSet in FreeRTOS-Kernel

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory. To remediate this issue, users should upgrade to version 11.3.1 or later.

CWE	CWE-843 CWE-125
Vendor	freertos
Product	freertos-kernel
Published	Aug 21, 2026

Stay Ahead of the Next One

Get instant alerts for freertos freertos-kernel

Be the first to know when new medium vulnerabilities affecting freertos freertos-kernel are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

FreeRTOS / FreeRTOS-Kernel

7.4.0 ≤ 11.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRTOS/FreeRTOS-Kernel/tree/11.3.1 aws.amazon.com: https://aws.amazon.com/security/security-bulletins/2026-086-aws/ github.com: https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-9wvc-hqvx-5wf5

Credits

NVIDIA