CVE-2021-45936

MEDIUM 5.5CVE-2021-45936 · Published 01/01/2022 · updated 17/06/2026

In short

CVE-2021-45936 is a MEDIUM (CVSS 5.5) vulnerability affecting wolfmqtt (wolfssl).
Chance of exploitation in the next 30 days (EPSS): 0.92%, higher than 60.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
wolfmqtt wolfssl	`= 1.9`	No fix yet

wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow in MqttDecode_Disconnect (called from MqttClient_DecodePacket and MqttClient_WaitType).

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Package

Affected versions

Patched versions

= 1.9

No fix yet

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