CVE-2021-3319 is a critical denial-of-service (DoS) vulnerability affecting Zephyr RTOS versions greater than v2.4.0, stemming from incorrect 802.15.4 frame validation that can lead to NULL Pointer Dereference (CWE-476) and attempts to access child of a non-structure pointer (CWE-588). With a CVSS score of 9.8, this vulnerability is easily exploitable over the network without authentication or user interaction, allowing for complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.4.0, < 2.5.0CPE matchmatch criteria | cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
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.