CVE-2023-33660
CVSS v3
7.5
HIGH
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A heap buffer overflow vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function copyn_str() in the file mqtt_parser.c. An attacker could exploit this vulnerability to cause a denial of service attack.
Technical details
- Published
- 2023-06-08
Frequently asked questions
What is CVE-2023-33660?
A heap buffer overflow vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function copyn_str() in the file mqtt_parser.c. An attacker could exploit this vulnerability to cause a denial of service attack.
Is CVE-2023-33660 actively exploited?
Active exploitation of CVE-2023-33660 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-33660?
CVE-2023-33660 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2023-33660 affecting your environment?
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