### [CVE-2021-3405](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3405)
![](https://img.shields.io/static/v1?label=Product&message=libebml&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=before%201.4.2%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-787&color=brightgreen)

### Description

A flaw was found in libebml before 1.4.2. A heap overflow bug exists in the implementation of EbmlString::ReadData and EbmlUnicodeString::ReadData in libebml.

### POC

#### Reference
- https://github.com/Matroska-Org/libebml/issues/74

#### Github
No PoCs found on GitHub currently.