---
title: "CVE-2024-10525: Eclipse Mosquito: Heap Buffer Overflow… | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2024-10525
---

# CVE-2024-10525: Eclipse Mosquito: Heap Buffer Overflow… | CubePath

## 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.

Official description from the CVE record, published by eclipse. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2024-10525)

## Key data

### CVSS 4.0 High 7.2

Score published by eclipse in the CVE record.

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

| Metric                              | Value   | What it means                                                                                                   |
| ----------------------------------- | ------- | --------------------------------------------------------------------------------------------------------------- |
| Attack vector                       | Network | The vulnerable component can be reached over a network, possibly from the Internet.                             |
| Attack complexity                   | Low     | No measurable action is needed to get around the system's built-in security controls. The attack is repeatable. |
| Attack requirements                 | None    | The attack works without any special deployment or execution conditions.                                        |
| Privileges required                 | Low     | A basic user account is needed.                                                                                 |
| User interaction                    | None    | No action from any user is needed.                                                                              |
| Vulnerable system: confidentiality  | Low     | Limited effect on the secrecy of data.                                                                          |
| Vulnerable system: integrity        | High    | Serious or total effect on the trustworthiness of data.                                                         |
| Vulnerable system: availability     | High    | Serious or total effect on availability.                                                                        |
| Subsequent systems: confidentiality | None    | No effect on other systems' data secrecy.                                                                       |
| Subsequent systems: integrity       | None    | No effect on other systems' data trustworthiness.                                                               |
| Subsequent systems: availability    | None    | No effect on other systems' availability.                                                                       |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.59222 (59.2% probability)

Percentile

99.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA assessment as of Oct 30, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Automatable

yes

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-122](https://cwe.mitre.org/data/definitions/122.html) Heap-based Buffer Overflow

## Affected products

Products listed in the CVE record, as the CNA published them.

- Eclipse Foundation mosquitto

  - affected: 1.3.2 up to 2.0.18

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [gitlab.eclipse.org/security/vulnerability-reports/-/issues/…](https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/190)
- [mosquitto.org/blog/2024/10/version-2-0-19-released](https://mosquitto.org/blog/2024/10/version-2-0-19-released/)
- [github.com/eclipse-mosquitto/mosquitto/commit/8ab20b4ba4204…](https://github.com/eclipse-mosquitto/mosquitto/commit/8ab20b4ba4204fdcdec78cb4d9f03c944a6e0e1c)
- [lists.debian.org/debian-lts-announce/2025/02/msg00022.html](https://lists.debian.org/debian-lts-announce/2025/02/msg00022.html)

## Timeline

1. ID reserved Oct 30, 2024
2. Record published Oct 30, 2024
3. Record last updated Nov 3, 2025

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## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:05 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)