CVE-2020-10071

moderate-risk
Published 2020-06-05

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 and later versions.

Do I need to act?

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13.9% chance of exploitation in next 30 days
EPSS score — higher than 86% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.0/10 Critical
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Zephyrproject

References (8)

Vendor Advisory https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-100...
Patch https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5...
Third Party Advisory https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-secu...
Third Party Advisory https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86
Vendor Advisory https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-100...
Patch https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5...
Third Party Advisory https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-secu...
Third Party Advisory https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86
43
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 12/34 · Low
Exposure 5/34 · Minimal