CVE-2021-3405

PoC —

CVSS 3.1

6.5 medium

EPSS

2%p76

Published

Feb 23, 2021 (Feb 23, 2021)

Modified

Jun 17, 2026

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.

Vendors: matroska fedoraproject debian
Products: libebml, fedora, debian linux
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.7%)

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