Description
In tinyMQTT commit 6226ade15bd4f97be2d196352e64dd10937c1962 (2024-02-18), a memory leak occurs due to the broker's failure to validate or reject malformed UTF-8 strings in topic filters. An attacker can exploit this by sending repeated subscription requests with arbitrarily large or invalid filter payloads. Each request causes memory to be allocated for the malformed topic filter, but the broker does not free the associated memory, leading to unbounded heap growth and potential denial of service under sustained attack.
INFO
Published Date :
2026-01-20T00:00:00.000Z
Last Modified :
2026-01-21T14:39:58.418Z
Source :
mitre
AFFECTED PRODUCTS
The following products are affected by CVE-2025-56353 vulnerability.
| Vendors | Products |
|---|---|
| Justdoit0910 |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-56353.
| URL | Resource |
|---|---|
| https://github.com/JustDoIt0910/tinyMQTT/issues/19 |
|