HOMEVULNERABILITIESCVE-2020-36330
CRITICAL

CVE-2020-36330

CWE-125Published: May 21, 2021· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

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

NVD Source

Technical Analysis

CVE-2020-36330 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

Apple2 product(s)
ipadosiphone os
Debian1 product(s)
debian linux
netapp1 product(s)
ontap select deploy administration utility
Red Hat1 product(s)
enterprise linux
webmproject1 product(s)
libwebp
Source: NVD CPE · 7 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1956853
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1956853
ADVISORYhttp://seclists.org/fulldisclosure/2021/Jul/54
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00005.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20211104-0004/
ADVISORYhttps://www.debian.org/security/2021/dsa-4930
ADVISORYhttp://seclists.org/fulldisclosure/2021/Jul/54
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00005.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/06/msg00006.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20211104-0004/
ADVISORYhttps://www.debian.org/security/2021/dsa-4930

All References (14)

→
http://seclists.org/fulldisclosure/2021/Jul/54Mailing List · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1956853Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00005.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00006.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20211104-0004/Third Party Advisory
→
https://support.apple.com/kb/HT212601Not Applicable
→
https://www.debian.org/security/2021/dsa-4930Third Party Advisory
→
http://seclists.org/fulldisclosure/2021/Jul/54Mailing List · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1956853Issue Tracking · Patch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00005.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/06/msg00006.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20211104-0004/Third Party Advisory
→
https://support.apple.com/kb/HT212601Not Applicable
→
https://www.debian.org/security/2021/dsa-4930Third Party Advisory

Quick Facts

CVE IDCVE-2020-36330
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-125
CISA KEVNo
Affected5 vendor(s)
PublishedMay 21, 2021

Related CVEs (CWE-125)

CVE-2013-0767
10.0
CVE-2021-41556
10.0
CVE-2009-2523
10.0
CVE-2017-14451
10.0
CVE-2021-21777
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-36330 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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