Eclipse Mosquito: Heap Buffer Overflow in my_subscribe_callback
Priority HIGH 72CWE-122Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.59222 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Eclipse Foundation | mosquitto | 1.3.2 – 2.0.18 | — | No fix listed | CNA |
- mosquitto VendorEclipse Foundation Affected 1.3.2 – 2.0.18 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* | 1.3.2 to before 2.0.19 | Vulnerable | Eclipse Foundation |
- cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* Versions 1.3.2 to before 2.0.19 Vulnerable ·Eclipse Foundation
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Satellite 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-10525
- 2026-10-03 Alias added: GHSA-cm54-mprw-5279
References
More Eclipse Foundation Mosquitto vulnerabilities
- TI-2018-09002 Reachable assertion in Eclipse Mosquitto CVSS 3.0HIGH 7.5
- TI-2023-12912 The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that… CVSS 3.1HIGH 7.5
- TI-2017-05287 Uncontrolled resource consumption in Eclipse Mosquitto CVSS 3.0HIGH 7.5
- TI-2023-05183 Unconditionally adding an event to the epoll causes excessive CPU consumption CVSS 3.1HIGH 7.5
- TI-2018-09010 Improper authentication in Eclipse Mosquitto CVSS 3.0HIGH 8.1
- TI-2018-09009 When Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) is configured to use an ACL file… CVSS 3.0HIGH 8.1
Sources
- CVE-2024-10525 · CVE Program
- CVE-2024-10525 · NVD
- FIRST EPSS
- GHSA-cm54-mprw-5279 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-10525 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences