Medium severity5.5NVD Advisory· Published Jan 1, 2022· Updated Jun 17, 2026
CVE-2021-45933
CVE-2021-45933
Description
wolfSSL wolfMQTT 1.9 has a heap-based buffer overflow (8 bytes) in MqttDecode_Publish (called from MqttClient_DecodePacket and MqttClient_HandlePacket).
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Affected products
3- wolfSSL/wolfMQTTdescription
Patches
Vulnerability mechanics
References
3- github.com/wolfSSL/wolfMQTT/commit/84d4b53122e0fa0280c7872350b89d5777dabbb2nvdPatchThird Party Advisory
- bugs.chromium.org/p/oss-fuzz/issues/detailnvdExploitIssue TrackingThird Party Advisory
- github.com/google/oss-fuzz-vulns/blob/main/vulns/wolfmqtt/OSV-2021-1211.yamlnvdExploitThird Party Advisory
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