VULNERABILITY INTELLIGENCE
CVE-2026-54412
CVSS score8.2 HIGH
EPSS probability0.41%
CISA KEVNot currently listed
Published2026-06-14
Last modified2026-08-10
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
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.
Weakness classification
- 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c: CWE-125