What is CVE-2026-54412?

CVE-2026-54412 is a high-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2026-06-14.

How severe is CVE-2026-54412?

High severity. CVSS v3 base score is 8.2 out of 10.

CVE-2026-54412

CVE-2026-54412

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 -…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H.

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read
CWE-191 — Integer Underflow

References

309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Frequently asked questions

What is CVE-2026-54412?: CVE-2026-54412 is a high-severity vulnerability, classified under Out-of-bounds Read. CVSS score: 8.2/10. Published 2026-06-14.
How severe is CVE-2026-54412?: High severity. CVSS v3 base score is 8.2 out of 10.