In libwebp 0.5.1, there is a double free bug in libwebpmux.
Priority LOW 36CWE-415Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.
Summary
In libwebp 0.5.1, there is a double free bug in libwebpmux.
Why it matters now
EPSS 0.01411 72nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:webmproject:libwebp:0.5.1:*:*:*:*:*:*:* | 0.5.1 | Vulnerable | Webmproject |
- cpe:2.3:a:webmproject:libwebp:0.5.1:*:*:*:*:*:*:* Versions 0.5.1 Vulnerable ·Webmproject
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2016-9969
- 2026-10-03 Alias added: GHSA-fhhw-9rjc-7m26
References
More Webmproject Libwebp vulnerabilities
- TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2020-18612 Use after free in libwebp CVSS 3.1CRITICAL 9.8
- TI-2020-18611 Out-of-bounds write in libwebp CVSS 3.1CRITICAL 9.8
- TI-2018-15238 A heap-based buffer overflow was found in libwebp in versions before 1.0.1 in PutLE16(). CVSS 3.1CRITICAL 9.8
- TI-2018-15241 A use of uninitialized value was found in libwebp in versions before 1.0.1 in ReadSymbol(). CVSS 3.1CRITICAL 9.8
- TI-2020-18614 Out-of-bounds read in libwebp CVSS 3.1CRITICAL 9.1
Sources
- CVE-2016-9969 · CVE Program
- CVE-2016-9969 · NVD
- FIRST EPSS
- GHSA-fhhw-9rjc-7m26 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences