Name: CVE-2021-3405: Out-of-bounds Write
Creator: Rapid7
Published: 2021-02-23T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-3405, CWE-787, CVSS 6.5, EPSS 0.01475

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.

CVSS Details

CVSS 3.1 Base Score: 6.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade libebml	Aug 22, 2024	Feb 23, 2021
Arch Linux	—	Upgrade to the latest version of Arch Linux	Jul 11, 2025	Feb 23, 2021
Debian	—	Upgrade libebml	Apr 20, 2021	Feb 23, 2021
Gentoo Linux	—	Upgrade dev-libs/libebml.	Aug 16, 2022	Feb 23, 2021
Suse	—	Upgrade libebml5	Oct 26, 2022	Feb 23, 2021

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CVSS Details

Covered by Rapid7

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