The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through…
Priority MEDIUM 42CWE-125Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.
Summary
The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the child_frame_length data obtained from a .webm file, which allows remote attackers to cause an information leak or a denial of service (heap-based buffer over-read and later out-of-bounds write), or possibly have unspecified other impact.
Why it matters now
EPSS 0.02 80th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
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:libwebm:*:*:*:*:*:*:*:* | up to 2018-01-30 | Vulnerable | Webmproject |
- cpe:2.3:a:webmproject:libwebm:*:*:*:*:*:*:*:* Versions up to 2018-01-30 Vulnerable ·Webmproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-6406
- 2026-10-03 Alias added: GHSA-929q-cjpr-43v5
References
More Webmproject Libwebm vulnerabilities
- TI-2018-04825 A use-after-free issue was discovered in libwebm through 2018-02-02. CVSS 3.0CRITICAL 9.8
- TI-2019-07138 In libwebm before 2019-03-08, a NULL pointer dereference caused by the functions… CVSS 3.0HIGH 7.5
- TI-2018-13634 In libwebm through 2018-10-03, there is an abort caused by… CVSS 3.0MEDIUM 6.5
Sources
- CVE-2018-6406 · CVE Program
- CVE-2018-6406 · NVD
- FIRST EPSS
- GHSA-929q-cjpr-43v5 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-6406 · 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