Description
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.
Published: 2026-08-21
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Amazon
Amazon freertos
CPEs cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:*
Vendors & Products Amazon
Amazon freertos

Fri, 21 Aug 2026 20:00:00 +0000


Fri, 21 Aug 2026 18:15:00 +0000

Type Values Removed Values Added
Description 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 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.

Fri, 21 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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
Title Improper input validation in FreeRTOS-Kernel timer command handling
First Time appeared Freertos
Freertos freertos-kernel
Weaknesses CWE-863
CPEs cpe:2.3:a:freertos:freertos-kernel:*:*:*:*:*:*:*:*
Vendors & Products Freertos
Freertos freertos-kernel
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': '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'}


Subscriptions

Amazon Freertos
Freertos Freertos-kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-08-27T16:46:43.844Z

Reserved: 2026-08-20T18:42:39.352Z

Link: CVE-2026-77234

cve-icon Vulnrichment

Updated: 2026-08-27T16:06:24.379Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-21T18:16:51.507

Modified: 2026-08-27T20:18:39.130

Link: CVE-2026-77234

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T21:00:03Z

Weaknesses