Freertos vulnerabilities
Published CVEs affecting Freertos products: 5 record(s), with severity, exploitation and fixes.
CVE-2026-77237
High · 8.4
CWE-125 Aug 21, 2026
Missing type validation in xQueueAddToSet in FreeRTOS-Kernel
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.
CVE-2026-77236
High · 7.3
CWE-787 Aug 21, 2026
Missing size validation in SecureContext_AllocateContext in FreeRTOS-Kernel
Missing minimum size validation in secure context allocation in FreeRTOS-Kernel before 11.3.1 might allow local users to corrupt secure-world heap metadata via an out-of-bounds write with an undersized stack size parameter. To remediate this issue, users should upgrade to version 11.3.1 or later.
CVE-2026-77235
High · 7.3
CWE-416 Aug 21, 2026
Missing privilege check in SecureContext_FreeContext in FreeRTOS-Kernel
Missing privilege verification in the secure context cleanup handler in FreeRTOS-Kernel before 11.3.1 might allow local users to cause a use-after-free condition in secure-world memory via the SVC handler for secure context deallocation. To remediate this issue, users should upgrade to version 11.3.1 or later.
CVE-2026-77234
High · 8.8
CWE-863 Aug 21, 2026
Improper input validation in FreeRTOS-Kernel timer command handling
Improper input validation in FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports to execute code in privileged kernel context. To remediate this issue, users should upgrade to version 11.3.1 or later.
CVE-2026-8686
Critical · 9.1
CWE-125 May 15, 2026
DoS from MQTT v5.0 Deserialization Fault in core MQTT
Missing bounds validation in the MQTT v5.0 property parser in coreMQTT before 5.0.1 allows an MQTT broker to cause a denial of service by sending a crafted packet.
To remediate this issue, users should upgrade to v5.0.1.