UBUNTU-CVE-2023-0809

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2023-0809
Downstream
USN-6492-1
Published: 02 Oct 2023, 19:15
Last modified:22 Apr 2026, 13:59

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Oct 2023, 19:15
Published
Vulnerability first disclosed
22 Apr 2026, 13:59
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected Systems

  • ubuntu•mosquitto

    < 1.6.9-1ubuntu0.1~esm1 | < 2.0.11-1ubuntu1.1

References (4)