CVE-2026-77237: high-severity vulnerability in FreeRTOS-Kernel
Missing type validation in xQueueAddToSet in FreeRTOS-Kernel
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.2%
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Affected products
FreeRTOS · FreeRTOS-KernelRelated CVEs — FreeRTOS-Kernel
In the same product, most dangerous first.
CVE-2024-28115HIGHPrivilege Escalation in FreeRTOS Kernel ARMv7-M MPU ports and ARMv8-M ports with MPU support enabledEPSS 0.2%CVE-2026-77234CRITICALImproper input validation in FreeRTOS-Kernel timer command handlingEPSS 0.2%CVE-2026-77236HIGHMissing size validation in SecureContext_AllocateContext in FreeRTOS-KernelEPSS 0.2%CVE-2026-109588CRITICALNumeric truncation in the MPU buffer authorization check in FreeRTOS-KernelEPSS 0.2%CVE-2026-77235HIGHMissing privilege check in SecureContext_FreeContext in FreeRTOS-KernelEPSS 0.2%CVE-2026-119086HIGHMissing type validation in xQueueSelectFromSet in FreeRTOS-KernelEPSS 0.2%