Critical severity · published May 21, 2021
CVE-2020-36329
A flaw was found in libwebp in versions before 1.0.1
9.8
CVSS
2.3%
EPSS
No
On KEV
Description
A flaw was found in libwebp in versions before 1.0.1. A use-after-free was found due to a thread being killed too early. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 14.7 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0 · source: NVD
LI
Libwebp · Webmproject
before 1.0.1 · source: NVD
OS
Ontap Select Deploy Administration Utility · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36329
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36329
Mailing List
http://seclists.org/fulldisclosure/2021/Jul/54
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1956843
Mailing List
https://lists.debian.org/debian-lts-announce/2021/06/msg00005.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
Third Party Advisory
https://security.netapp.com/advisory/ntap-20211112-0001/
Third Party Advisory
https://support.apple.com/kb/HT212601
More from iOS
10.0
CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2025-24085
Apple Multiple Products Use-After-Free Vulnerability
9.8
CVE-2025-31200
Apple Multiple Products Memory Corruption Vulnerability
9.8
CVE-2025-31201
Apple Multiple Products Arbitrary Read and Write Vulnerability