CVE-2024-10525

CRITICAL
Published Oct 30, 2024 Modified Nov 3, 2025 CWE-122 CWE-787

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.

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CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122
CWE-787 Out-of-bounds Write

Affected Products

Vendor Product
eclipse mosquitto

References

Frequently Asked Questions

What is CVE-2024-10525? +
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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2024-10525? +
CVE-2024-10525 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.
What products are affected by CVE-2024-10525? +
CVE-2024-10525 affects products from eclipse, specifically: mosquitto. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-10525? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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