Use after free in MKVToolNix
Priority LOW 37CWE-416Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
A use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can cause arbitrary code execution in the context of the current user.
Why it matters now
EPSS 0.01522 74th 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 |
|---|---|---|---|---|---|
| — | MKVToolNix | MKVToolNix mkvinfo v25.0.0 ('Prog Noir') 64-bit | — | No fix listed | CNA |
- MKVToolNix Vendor— Affected MKVToolNix mkvinfo v25.0.0 ('Prog Noir') 64-bit Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mkvtoolnix:mkvinfo:25.0.0:*:*:*:*:*:*:* | 25.0.0 | Vulnerable | Mkvtoolnix |
- cpe:2.3:a:mkvtoolnix:mkvinfo:25.0.0:*:*:*:*:*:*:* Versions 25.0.0 Vulnerable ·Mkvtoolnix
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2018-4022
- 2026-10-03 Alias added: GHSA-jxj9-2h46-gwf3
References
Sources
- CVE-2018-4022 · CVE Program
- CVE-2018-4022 · NVD
- FIRST EPSS
- GHSA-jxj9-2h46-gwf3 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-4022 · 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