CVE-2024-10525

Name: CVE-2024-10525
Creator: NVD / NIST
Published: 2024-10-30T12:15:02.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 57.90%

Last modified Jun 17, 2026

CVE-2024-10525 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. In Eclipse Mosquitto, from version 1.3.2 through 2.0.18, if a malicious broker sends a crafted SUBACK packet with no reason codes, a client using libmosquitto may make out of bounds memory access when acting in its on_subscribe callback. This affects the mosquitto_sub and mosquitto_rr clients.. EPSS estimates a 57.90% chance of exploitation in the next 30 days.

Description

In Eclipse Mosquitto, from version 1.3.2 through 2.0.18, if a malicious broker sends a crafted SUBACK packet with no reason codes, a client using libmosquitto may make out of bounds memory access when acting in its on_subscribe callback. This affects the mosquitto_sub and mosquitto_rr clients.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

7.2/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

57.90%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Eclipse	Mosquitto	>= 1.3.2, < 2.0.19

References

https://github.com/eclipse-mosquitto/mosquitto/commit/8ab20b4ba4204fdcdec78cb4d9f03c944a6e0e1cPatch
https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/190Exploit, Issue Tracking, Vendor Advisory
https://mosquitto.org/blog/2024/10/version-2-0-19-released/Release Notes
https://lists.debian.org/debian-lts-announce/2025/02/msg00022.html

Timeline

Published: Oct 30, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-10525?

How severe is CVE-2024-10525?

CVE-2024-10525 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 57.90% probability of exploitation in the next 30 days.

How do I fix CVE-2024-10525?

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-2024-10525?

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

Scan your code now

Source: NVD / NIST