Vulnerability · Published Jan 11, 2023 · Assigned by zephyr
CVE-2021-3966Usb bluetooth device ACL read cb buffer overflow
Critical 9.6
In plain English
A critical-severity heap buffer overflow in zephyr from zephyrproject-rtos. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.5%top 57.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| zephyrproject-rtos | zephyr | unspecified – through v3.0 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H