Out-of-bounds write in libwebp
Priority MEDIUM 47CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.
Summary
A flaw was found in libwebp in versions before 1.0.1. A heap-based buffer overflow in function WebPDecodeRGBInto is possible due to an invalid check for buffer size. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Why it matters now
EPSS 0.02662 85th percentileScored 2026-11-07
Fix Fixed Red Hat: 5 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libwebp | libwebp 1.0.1 | — | No fix listed | CNA |
- libwebp Vendor— Affected libwebp 1.0.1 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:* | before 1.0.1 | Vulnerable | Webmproject |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:apple:ipados:14.7:*:*:*:*:*:*:* | 14.7 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:14.7:*:*:*:*:*:*:* | 14.7 | Vulnerable | Apple |
- cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:* Versions before 1.0.1 Vulnerable ·Webmproject
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:apple:ipados:14.7:*:*:*:*:*:*:* Versions 14.7 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:14.7:*:*:*:*:*:*:* Versions 14.7 Vulnerable ·Apple
Remediation
Red Hat 5 advisories
- RHSA-2021:2364 Released 2021-06-09 · Red Hat rating Importantlibwebp security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.2) libwebp-1.0.0-4.el8_2, libwebp-devel-1.0.0-4.el8_2
- RHSA-2021:2365 Released 2021-06-09 · Red Hat rating Importantlibwebp security update
- Red Hat Enterprise Linux AppStream EUS (v. 8.1) libwebp-1.0.0-4.el8_1, libwebp-devel-1.0.0-4.el8_1
- RHSA-2021:2354 Released 2021-06-09 · Red Hat rating Importantlibwebp security update
- Red Hat Enterprise Linux AppStream (v. 8) libwebp-1.0.0-3.el8_4, libwebp-devel-1.0.0-3.el8_4
Show 2 more Red Hat advisories
- RHSA-2021:2328 Released 2021-06-08 · Red Hat rating Importantqt5-qtimageformats security update
- Red Hat Enterprise Linux Server (v. 7) qt5-qtimageformats-5.9.7-2.el7_9, qt5-qtimageformats-5.9.7-2.el7_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) qt5-qtimageformats-doc-5.9.7-2.el7_9
- Red Hat Enterprise Linux Workstation (v. 7) qt5-qtimageformats-5.9.7-2.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) qt5-qtimageformats-doc-5.9.7-2.el7_9
- RHSA-2021:2260 Released 2021-06-07 · Red Hat rating Importantlibwebp security update
- Red Hat Enterprise Linux Client (v. 7) libwebp-0.3.0-10.el7_9
- Red Hat Enterprise Linux Client Optional (v. 7) libwebp-devel-0.3.0-10.el7_9, libwebp-java-0.3.0-10.el7_9, libwebp-tools-0.3.0-10.el7_9
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libwebp-devel-0.3.0-10.el7_9, libwebp-java-0.3.0-10.el7_9, libwebp-tools-0.3.0-10.el7_9
- Red Hat Enterprise Linux Server (v. 7) libwebp-0.3.0-10.el7_9, libwebp-0.3.0-10.el7_9.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) libwebp-devel-0.3.0-10.el7_9, libwebp-devel-0.3.0-10.el7_9.ppc, libwebp-java-0.3.0-10.el7_9 +1
- Red Hat Enterprise Linux Workstation (v. 7) libwebp-0.3.0-10.el7_9
- Red Hat Enterprise Linux Workstation Optional (v. 7) libwebp-devel-0.3.0-10.el7_9, libwebp-java-0.3.0-10.el7_9, libwebp-tools-0.3.0-10.el7_9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
libwebp — DSA-4930
5 records Highest priority Priority MEDIUM 4 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2020-18612 Use after free in libwebpPriority MEDIUM 47
- TI-2020-18614 Out-of-bounds read in libwebpPriority MEDIUM 44
- TI-2020-18613 Out-of-bounds read in libwebpPriority MEDIUM 44
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| 7Server-RHMTC-1.4 | Fixed | — |
| 8Base-RHMTC-1.4 | Fixed | — |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2021:2354 |
| Red Hat Enterprise Linux AppStream EUS (v. 8.1) | Fixed | RHSA-2021:2365 |
| Red Hat Enterprise Linux AppStream EUS (v. 8.2) | Fixed | RHSA-2021:2364 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2021:2260 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2021:2260 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2021:2260 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2021:2260, RHSA-2021:2328 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2021:2260, RHSA-2021:2328 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2021:2260, RHSA-2021:2328 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2021:2260, RHSA-2021:2328 |
Not affected: 3 products
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-36328
- 2026-10-03 Alias added: GHSA-jxwm-333p-5cwx
References
Advisory 6
- [debian-lts-announce] 20210605 [SECURITY] [DLA 2672-1] libwebp security update
- [debian-lts-announce] 20210606 [SECURITY] [DLA 2677-1] libwebp security update
- DSA-4930
- https://support.apple.com/kb/HT212601
- 20210723 APPLE-SA-2021-07-21-1 iOS 14.7 and iPadOS 14.7
- https://security.netapp.com/advisory/ntap-20211112-0001/
Sources
- CVE-2020-36328 · CVE Program
- CVE-2020-36328 · NVD
- FIRST EPSS
- GHSA-jxwm-333p-5cwx · GitHub Advisory Database · CC BY 4.0
- CVE-2020-36328 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences