Out-of-bounds write in Mongoose - CVE-2023-2905
Published: August 9, 2023 / Updated: June 23, 2025
Vulnerability identifier: #VU111818
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2023-2905
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Cesanta Software Ltd.
Affected software:
Mongoose
Mongoose
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Due to a failure in validating the length of a provided MQTT_CMD_PUBLISH parsed message with a variable length header, Cesanta Mongoose, an embeddable web server, version 7.10 is susceptible to a heap-based buffer overflow vulnerability in the default configuration. Version 7.9 and prior does not appear to be vulnerable. This issue is resolved in version 7.11.
How to mitigate CVE-2023-2905
Install update from vendor's website.