SB2025112806 - Remote denial of service in NanoMQ
Published: November 28, 2025
Security Bulletin ID
SB2025112806
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-65953)
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a use-after-free error within the the TCP transport component of NanoMQ in src/sp/transport/mqtt/broker_tcp.c caused by premature cleanup of message and pipe structures. A remote attacker can send packets with specially crafted MQTTV5 properties to the application and perform a denial of service attack.
Remediation
Install update from vendor's website.