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NVD / CVE Program· CNA redhat

CVE-2020-36332: A flaw was found in libwebp in versions before 1.0.1.

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.9% (FIRST EPSS); higher than 80.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: libwebp (AlmaLinux:8) 1.0.0-5.el8; libwebp-devel (AlmaLinux:8) 1.0.0-5.el8; libwebp (Debian:10) 0.6.1-2+deb10u1.

Low priority for now. Upgrade to libwebp (AlmaLinux:8) 1.0.0-5.el8; libwebp-devel (AlmaLinux:8) 1.0.0-5.el8; libwebp (Debian:10) 0.6.1-2+deb10u1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A flaw was found in libwebp in versions before 1.0.1. When reading a file libwebp allocates an excessive amount of memory. The highest threat from this vulnerability is to the service availability.

Published
May 21, 2021
Updated
Jun 16, 2026
EPSS
1.9% · 80th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 1.9%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
webmprojectlibwebp
redhatenterprise linux
debiandebian linux
netappontap select deploy administration utility

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a libwebp

    • libwebp 1.0.1affected
Affected versions · NVD (4)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux10.0
  • netapp ontap select deploy administration utilityall versions
  • redhat enterprise linux8.0
  • webmproject libwebpbefore 1.0.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8libwebpbefore 1.0.0-5.el81.0.0-5.el8
AlmaLinux:8libwebp-develbefore 1.0.0-5.el81.0.0-5.el8
Debian:10libwebpbefore 0.6.1-2+deb10u10.6.1-2+deb10u1
Debian:12libwebpbefore 0.6.1-2.10.6.1-2.1
openSUSE:Leap 15.3libwebpbefore 0.5.0-3.5.10.5.0-3.5.1
Red Hat:enterprise_linux:8::appstreamlibwebpbefore 0:1.0.0-5.el80:1.0.0-5.el8
Red Hat:enterprise_linux:8::appstreamlibwebp-debuginfobefore 0:1.0.0-5.el80:1.0.0-5.el8
Red Hat:enterprise_linux:8::appstreamlibwebp-debugsourcebefore 0:1.0.0-5.el80:1.0.0-5.el8
Red Hat:enterprise_linux:8::appstreamlibwebp-develbefore 0:1.0.0-5.el80:1.0.0-5.el8
Red Hat:enterprise_linux:8::appstreamlibwebp-java-debuginfobefore 0:1.0.0-5.el80:1.0.0-5.el8
Red Hat:enterprise_linux:8::appstreamlibwebp-tools-debuginfobefore 0:1.0.0-5.el80:1.0.0-5.el8
Rocky Linux:8libwebpbefore 0:1.0.0-5.el80:1.0.0-5.el8
SUSE:HPE Helion OpenStack 8libwebpbefore 0.4.3-4.7.10.4.3-4.7.1
SUSE:Linux Enterprise Module for Package Hub 15 SP2libwebpbefore 0.5.0-3.5.10.5.0-3.5.1

Same product

webmproject: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-36329A flaw was found in libwebp in versions before 1.0.1.
    40Plan
  • CVE-2020-36328A flaw was found in libwebp in versions before 1.0.1.
    40Plan
  • CVE-2018-25014A use of uninitialized value was found in libwebp in versions before 1.0.1 in ReadSymbol().
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2020-36330May 21, 2021 · A flaw was found in libwebp in versions before 1.0.1.
    37Monitor
  • ← EarlierCVE-2020-36331May 21, 2021 · A flaw was found in libwebp in versions before 1.0.1.
    37Monitor
  • Later →CVE-2023-1999Jun 20, 2023 · Use after free in libwebp
    30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:libwebp1.0.0-5.el8 · AlmaLinux:8Package registry (OSV)
almalinux:libwebp-devel1.0.0-5.el8 · AlmaLinux:8Package registry (OSV)
debian:libwebp0.6.1-2.1 · Debian:12Package registry (OSV)
opensuse:libwebp0.5.0-3.5.1 · openSUSE:Leap 15.3Package registry (OSV)
red hat:libwebp0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libwebp-debuginfo0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libwebp-debugsource0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libwebp-devel0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libwebp-java-debuginfo0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
red hat:libwebp-tools-debuginfo0:1.0.0-5.el8 · Red Hat:enterprise_linux:8::appstreamPackage registry (OSV)
rocky linux:libwebp0:1.0.0-5.el8 · Rocky Linux:8Package registry (OSV)
suse:libwebp0.4.3-4.7.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records