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CVE-2020-36329

31
FAUCET Score

CVE-2020-36329 is a critical use-after-free vulnerability in libwebp versions prior to 1.0.1, stemming from a thread being terminated prematurely. This flaw impacts a wide range of products including those from Apple, Debian, NetApp, Red Hat, and WebM Project. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk to data confidentiality, integrity, and system availability, requiring no user interaction or privileges for exploitation over a network. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community attention with 11 mentions and one media article, indicating awareness and potential for future exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.1CPE matchmatch criteria
cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.32%
Probability of exploitation in next 30 days
EPSS Percentile
81.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0232 is in the 71st percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (21)

microsoftpatch availablevia msrc
Product: 16967-16820Fixed in: 1.0.3-1
microsoftpatch availablevia msrc
Product: cm1 libwebp 1.0.3-1 on CBL Mariner 1.0Fixed in: 1.0.3-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qt5-qtimageformats-0:5.9.7-2.el7_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: libwebp-0:1.0.0-3.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.1 Extended Update SupportFixed in: libwebp-0:1.0.0-4.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Extended Update SupportFixed in: libwebp-0:1.0.0-4.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-controller-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-log-reader-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-must-gather-rhel8:v1.4.6-4
View patch
redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-registry-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-rsync-transfer-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-ui-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-aws-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-gcp-rhel8:v1.4.6-3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-plugin-for-microsoft-azure-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-restic-restore-helper-rhel8:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-velero-rhel8:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-velero-plugin-rhel8:v1.4.6-4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.4Fixed in: rhmtc/openshift-migration-operator-bundle:v1.4.6-5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libwebp-0:0.3.0-10.el7_9
View patch

Vendor Advisories (2)

microsoft2021-May/CVE-2020-36329Critical

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.

May 11, 2021
redhatCVE-2020-36329Important

libwebp: use-after-free in EmitFancyRGB() in dec/io_dec.c

Feb 25, 2020

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchRelease NotesThird Party Advisory
seclists.org / fulldisclosure/2021/Jul/54
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/06/msg00005.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2021/06/msg00006.html
Mailing ListThird Party Advisory
security.netapp.com / advisory/ntap-20211112-0001
Third Party Advisory
support.apple.com / kb/HT212601
Third Party Advisory
debian.org / security/2021/dsa-4930
Third Party Advisory