CVE-2021-3966
Published: 11 January 2023
Summary
CVE-2021-3966 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Zephyrproject Zephyr. Its CVSS base score is 9.6 (Critical).
Operationally, ranked at the 29.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-27171
Vulnerability details
usb device bluetooth class includes a buffer overflow related to implementation of net_buf_add_mem.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Platform-independent managed code eliminates the need for unchecked native buffer copies that are the root cause of classic buffer overflows.