Out-of-bounds read in libwebp
Priority MEDIUM 44CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.0223 82nd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix
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 · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:* | before 1.0.1 | Vulnerable | Webmproject |
| 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: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:apple:ipados:*:*:*:*:*:*:*:* | before 14.7 | Vulnerable | Apple |
| cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* | before 14.7 | Vulnerable | Apple |
- cpe:2.3:a:webmproject:libwebp:*:*:*:*:*:*:*:* Versions before 1.0.1 Vulnerable ·Webmproject
- 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: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:apple:ipados:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
- cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 14.7 Vulnerable ·Apple
Remediation
Red Hat 1 advisory
- RHSA-2021:4231 Released 2021-11-09 · Red Hat rating Moderatelibwebp security update
- Red Hat Enterprise Linux AppStream (v. 8) libwebp-1.0.0-5.el8, libwebp-devel-1.0.0-5.el8
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-2020-18611 Out-of-bounds write in libwebpPriority MEDIUM 47
- TI-2020-18614 Out-of-bounds read in libwebpPriority MEDIUM 44
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2021:4231 |
Not affected: 2 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2020-36330
- 2026-10-03 Alias added: GHSA-478j-8hp8-fjpw
References
Advisory 5
Sources
- CVE-2020-36330 · CVE Program
- CVE-2020-36330 · NVD
- FIRST EPSS
- GHSA-478j-8hp8-fjpw · GitHub Advisory Database · CC BY 4.0
- CVE-2020-36330 · 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