CVE-2023-0809

5.3 mediumEPSS 0.7%

Medium (5.3) in eclipse mosquitto. EPSS 0.7% chance of exploitation in the next 30 days.

In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.

Severity

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 53% of CVEs (scores of 2026-10-31)
CWEs: CWE-770, CWE-789
Published: 2023-10-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19