CVE-2020-36328

libwebp: heap-based buffer overflow in WebPDecode*Into functions

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Severity

Important

Red Hat Product Security

9.8

CVSS 3.1

Review impact separately from score.

Published · February 25, 2020

Updated · November 22, 2025

Description

A flaw was found in libwebp. A heap-based buffer overflow in functions WebPDecode*Into is possible due to an invalid check for buffer size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Statement

This issue did not affect the versions of Firefox and Thunderbird as shipped with Red Hat Enterprise Linux 7, and 8 as they embed the fixed version of libwebp.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-787 · Out-of-bounds Write