Name: CVE-2020-28928: Out-of-bounds Write
Creator: Rapid7
Published: 2020-11-24T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2020-28928, CWE-787, CVSS 5.5, EPSS 0.00652

In musl libc through 1.2.1, wcsnrtombs mishandles particular combinations of destination buffer size and source character limit, as demonstrated by an invalid write access (buffer overflow).

CVSS Details

CVSS 3.1 Base Score: 5.5
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade musl	Nov 24, 2020	Nov 24, 2020
Arch Linux	—	Upgrade to the latest version of Arch Linux	Jul 11, 2025	Nov 24, 2020
Debian	—	Upgrade musl	Dec 2, 2020	Nov 24, 2020
Ubuntu	—	Upgrade musl (Ubuntu Pro)Upgrade musl-dev (Ubuntu Pro)	Apr 10, 2023	Nov 24, 2020

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CVSS Details

Covered by Rapid7

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