Use-after-free vulnerability in the EbmlMaster::Read function in libEBML before 1.3.3…
Priority MEDIUM 45Published · 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
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
Use-after-free vulnerability in the EbmlMaster::Read function in libEBML before 1.3.3 allows context-dependent attackers to have unspecified impact via a "deeply nested element with infinite size" followed by another element of an upper level in an EBML document.
Why it matters now
EPSS 0.02126 82nd percentileScored 2026-11-07
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
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8789
- 2026-10-03 Alias added: GHSA-h7v7-5ph3-4v3p
References
Advisory 4
More Matroska Libebml vulnerabilities
- TI-2023-28722 In libebml before 1.4.5, an integer overflow in MemIOCallback.cpp can occur when reading… CVSS 3.1MEDIUM 6.5
- TI-2021-02372 Out-of-bounds write in libebml CVSS 3.1MEDIUM 6.5
- TI-2015-07236 The EbmlUnicodeString::UpdateFromUTF8 function in libEBML before 1.3.3 allows… CVSS 3.0MEDIUM 4.3
- TI-2015-07237 The EbmlElement::ReadCodedSizeValue function in libEBML before 1.3.3 allows… CVSS 3.0MEDIUM 4.3
Sources
- CVE-2015-8789 · CVE Program
- CVE-2015-8789 · NVD
- FIRST EPSS
- GHSA-h7v7-5ph3-4v3p · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8789 · 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