CVE search · CVE-2026-77234

CVE-2026-77234

critical 9.3

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.

Open in the NVD CVE.org JSON

Status: Analyzed
Published: 2026-08-21
Last changed: 2026-10-14
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Weakness: CWE-863

Severity

Version	Score	Vector	Source
CVSS 4.0	critical 9.3	`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`	ff89ba41-3aa1-4d27-914a-91399e9639e5Secondary
CVSS 3.1	high 8.8	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`	ff89ba41-3aa1-4d27-914a-91399e9639e5Secondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

amazon · freertos

References

https://aws.amazon.com/security/security-bulletins/2026-086-aws/Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1Release Notes
https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-w3vr-pr75-5hc6Vendor Advisory

CVE-2026-77234

Details

Severity

Affected products

References