CVE-2021-27431 is a critical integer wrap-around vulnerability affecting ARM CMSIS RTOS2 versions prior to 2.1.3, specifically within the osRtxMemoryAlloc function. This flaw allows for arbitrary memory allocation, potentially leading to system crashes or remote code execution. With a CVSS score of 9.8, it is easily exploitable over the network with low complexity and no user interaction, posing a high risk to confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or active exploitation have been observed, and community discussion is minimal, the inherent severity warrants attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.1.3CPE matchmatch criteria | cpe:2.3:o:arm:cmsis-rtos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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.