An issue was discovered in Mongoose before 6.15. The parse_mqtt() function in mg_mqtt.c has a critical heap-based buffer overflow.
https://github.com/cesanta/mongoose/releases/tag/6.15
https://github.com/cesanta/mongoose/commit/b3e0f780c34cea88f057a62213c012aa88fe2deb
Source: Mitre, NVD
Published: 2019-06-24
Updated: 2020-08-24
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.00459