VULNERABILITY INTELLIGENCE

CVE-2026-8686

CVSS score8.7 HIGH
EPSS probability0.39%
CISA KEVNot currently listed
Published2026-05-15
Last modified2026-10-25
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Description

Missing bounds validation in the MQTT v5.0 property parser in coreMQTT before 5.0.1 allows an MQTT broker to cause a denial of service by sending a crafted packet. To remediate this issue, users should upgrade to v5.0.1.

Weakness classification

  • CWE-125: Out-of-bounds Read

Primary references