CVE-2021-43997 is a privilege escalation vulnerability affecting FreeRTOS versions 10.2.0 through 10.4.5 and 10.4.6, specifically in ARMv7-M and ARMv8-M MPU-enabled ports. It allows non-kernel code to call an internal function to raise privileges or for injected code to achieve further escalation through a crafted stack frame. With a CVSS score of 7.8 (High), this vulnerability has a local attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, and it is not listed in the KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 10.2.0, < 10.4.6CPE matchmatch criteria | cpe:2.3:o:amazon:freertos:*:*:*:*:-:*:*:* | ||
10.4.3CPE matchmatch criteria | cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.