High severity8.2NVD Advisory· Published Jun 14, 2026· Updated Aug 10, 2026
CVE-2026-54412
CVE-2026-54412
Description
LiamBindle MQTT-C through version 1.1.6 contains a heap-based out-of-bounds read and integer underflow in the mqtt_unpack_publish_response function in src/mqtt.c that allows a remote unauthenticated attacker controlling an MQTT broker - or able to inject MQTT traffic into an unencrypted session - to crash a subscribed MQTT-C client and potentially disclose adjacent heap memory by sending a single crafted PUBLISH packet.
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Affected products
2(expand)+ 1 more
- (no CPE)
- (no CPE)range: <=1.1.6
Patches
Vulnerability mechanics
References
3News mentions
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