CVE-2020-7248: Openwrt

High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.

libubox in OpenWrt before 18.06.7 and 19.x before 19.07.1 has a tagged binary data JSON serialization vulnerability that may cause a stack based buffer overflow.

Affected products

• Openwrt Openwrt: from 18.06.0, before 18.06.7 (fixed in 18.06.7); version 19.07.0 only

Published 2020-03-16. Last modified 2026-06-17.