CVE-2021-3436 describes a medium-severity vulnerability in Zephyr RTOS versions 1.14.2 and later, where an attacker can overwrite an existing Bluetooth bond during the key distribution phase if the bond's identity address is known. This flaw, categorized as a Use of Multiple Resources with Duplicate Identifier (CWE-694), has a CVSS score of 6.5, indicating a network-based attack with low complexity that can lead to low integrity and availability impacts. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.14.2CPE matchmatch criteria | cpe:2.3:o:zephyrproject:zephyr:1.14.2:*:*:*:*:*:*:* | ||
2.4.0CPE matchmatch criteria | cpe:2.3:o:zephyrproject:zephyr:2.4.0:*:*:*:*:*:*:* | ||
2.5.0CPE matchmatch criteria | cpe:2.3:o:zephyrproject:zephyr:2.5.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.