CVE-2020-10066

Incorrect Error Handling in Bluetooth HCI core

2.5 Low

Incorrect Error Handling in Bluetooth HCI core. Zephyr versions >= v1.14.2, >= v2.2.0 contain NULL Pointer Dereference (CWE-476). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gc66-xfrc-24qr

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.21%Down 0.2 points since May 25, 2021

What each source reports

CVE List Score used 2.5

Incorrect Error Handling in Bluetooth HCI core

Record: CVE-2020-10066
CVSS 3.1: 2.5 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness: CWE-476
Updated: 2026-11-02

EUVDEUVD-2020-2531 2.5

Record: EUVD-2020-2531
CVSS 3.1: 2.5 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Updated: 2026-11-03

NVD 2.5

Record: CVE-2020-10066
CVSS 3.1: 2.5 LowCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS 3.1: 5.7 MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 3.3 LowAV:A/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-476
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-10066 is a low vulnerability (CVSS 2.5) in Zephyrproject Zephyr, published May 24, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. No source names a fixed version.

References

github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-gc66-xfrc-24qr