What is CVE-2020-10071?

CVE-2020-10071 is a critical-severity vulnerability in Zephyrproject Zephyr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.0/10. Published 2020-06-05.

How severe is CVE-2020-10071?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Buffer overflow in Zephyrproject Zephyr

CVE-2020-10071

The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0…

Vulnerability class: Buffer Overflow

EPSS: 0.034 (87.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr — versions 2.2.0

Weakness classification (CWE)

References

vulnerabilities@zephyrproject.org (Third Party Advisory, x_refsource_MISC)
vulnerabilities@zephyrproject.org (Third Party Advisory, x_refsource_MISC)
vulnerabilities@zephyrproject.org (x_refsource_MISC, Vendor Advisory)
vulnerabilities@zephyrproject.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-10071?: CVE-2020-10071 is a critical-severity vulnerability in Zephyrproject Zephyr, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.0/10. Published 2020-06-05.
How severe is CVE-2020-10071?: Critical severity. CVSS v3 base score is 9.0 out of 10.