What’s Vulnerable › Vulnerabilities

CVE-2020-36331

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-21 · updated 2026-06-17
• Weakness: CWE-125

Description

A flaw was found in libwebp in versions before 1.0.1. An out-of-bounds read was found in function ChunkAssignData. The highest threat from this vulnerability is to data confidentiality and to the service availability.

Affected products

• Apple iPadOS: before 14.7 — fixed in 14.7
• Apple Iphone Os: before 14.7 — fixed in 14.7
• Debian Linux: 9.0, 10.0
• NetApp ONTAP Select Deploy administration utility: all versions
• Red Hat Enterprise Linux: 8.0
• Chromium libwebp: before 1.0.1 — fixed in 1.0.1

How to fix

Upgrade to a fixed version: Apple iPadOS 14.7; Apple Iphone Os 14.7; Chromium libwebp 1.0.1. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2021/Jul/54
• https://bugzilla.redhat.com/show_bug.cgi?id=1956856
• https://lists.debian.org/debian-lts-announce/2021/06/msg00005.html
• https://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
• https://security.netapp.com/advisory/ntap-20211112-0001/
• https://support.apple.com/kb/HT212601
• https://www.debian.org/security/2021/dsa-4930
• http://seclists.org/fulldisclosure/2021/Jul/54
• https://bugzilla.redhat.com/show_bug.cgi?id=1956856
• https://lists.debian.org/debian-lts-announce/2021/06/msg00005.html
• https://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
• https://security.netapp.com/advisory/ntap-20211112-0001/

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