Buffer overflow in gstreamer
Priority MEDIUM 47CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-120 and the CVSS impact.
Summary
A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause the stack to be smashed, memory corruption and possibly code execution.
Why it matters now
EPSS 0.0248 84th 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 |
|---|---|---|---|---|---|
| — | gstreamer | Fixed in gst-plugins-bad-1.18.1 | — | No fix listed | CNA |
- gstreamer Vendor— Affected Fixed in gst-plugins-bad-1.18.1 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:freedesktop:gst-plugins-bad:*:*:*:*:*:*:*:* | before 1.18.1 | Vulnerable | Freedesktop |
- cpe:2.3:a:freedesktop:gst-plugins-bad:*:*:*:*:*:*:*:* Versions before 1.18.1 Vulnerable ·Freedesktop
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 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3185
- 2026-10-03 Alias added: GHSA-fr84-36xq-g72g
References
Advisory 1
Sources
- CVE-2021-3185 · CVE Program
- CVE-2021-3185 · NVD
- FIRST EPSS
- GHSA-fr84-36xq-g72g · GitHub Advisory Database · CC BY 4.0
- CVE-2021-3185 · 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