CVE-2023-2905

Name: CVE-2023-2905
Creator: NVD / NIST
Published: 2023-08-09T05:15:40.74+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2023-2905 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.01%

58.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cesanta	Mongoose	7.10

References

https://github.com/cesanta/mongoose/pull/2274Patch
https://github.com/cesanta/mongoose/releases/tag/7.11Release Notes
https://takeonme.org/cves/CVE-2023-2905.htmlExploit, Patch, Third Party Advisory
https://github.com/cesanta/mongoose/pull/2274Patch
https://github.com/cesanta/mongoose/releases/tag/7.11Release Notes
https://takeonme.org/cves/CVE-2023-2905.htmlExploit, Patch, Third Party Advisory

Timeline

Published: Aug 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-2905?

How severe is CVE-2023-2905?

CVE-2023-2905 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2023-2905?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-2905?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST