In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage…
Priority LOW 36CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.
Summary
In vm-superio before 0.1.1, the serial console FIFO can grow to unlimited memory usage when data is sent to the input source (i.e., standard input). This behavior cannot be reproduced from the guest side. When no rate limiting is in place, the host can be subject to memory pressure, impacting all other VMs running on the same host.
Why it matters now
EPSS 0.01531 74th 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
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vm-superio_project:vm-superio:*:*:*:*:*:*:*:* | before 0.1.1 | Vulnerable | Vm-superio Project |
- cpe:2.3:a:vm-superio_project:vm-superio:*:*:*:*:*:*:*:* Versions before 0.1.1 Vulnerable ·Vm-superio Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-27173
- 2026-10-03 Alias added: GHSA-9hcc-hc53-34f7
References
Sources
- CVE-2020-27173 · CVE Program
- CVE-2020-27173 · NVD
- FIRST EPSS
- GHSA-9hcc-hc53-34f7 · 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