Buffer overflow in Zephyrproject Zephyr
CVE-2021-3861
The RNDIS USB device class includes a buffer overflow vulnerability. Zephyr versions >= v2.6.0 contain Heap-based Buffer Overflow (CWE-122). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-hvfp-w4h8-gxvj
Vulnerability class: Buffer Overflow
EPSS: 0.005 (38.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H.
Affected products
- Zephyrproject Zephyr
- Zephyrproject-rtos Zephyr — versions v2.6.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vulnerabilities@zephyrproject.org (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3861?
- CVE-2021-3861 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Heap-based Buffer Overflow. CVSS score: 8.2/10. Published 2022-02-07.
- How severe is CVE-2021-3861?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2021-3861 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.