Improper input validation in Lenovo Cloud Networking Operating System
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
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.
Summary
An internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Operating System (CNOS)’ optional REST API management interface. This interface is disabled by default and not vulnerable unless enabled. When enabled, it is only vulnerable where attached to a VRF and as allowed by defined ACLs. Lenovo strongly recommends upgrading to a non-vulnerable CNOS release. Where not possible, Lenovo recommends disabling the REST API management interface or restricting access to the management VRF and further limiting access to authorized management stations via ACL.
Why it matters now
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 |
|---|---|---|---|---|---|
| Lenovo | Cloud Networking Operating System (CNOS) | before 10.10.6.0 | 10.10.6.0 | Patch available | CNA |
- Cloud Networking Operating System (CNOS) VendorLenovo Affected before 10.10.6.0 Fixed in 10.10.6.0 Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:lenovo:cloud_networking_operating_system:*:*:*:*:*:*:*:* | before 10.10.6.0 | Vulnerable | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_g8272:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_g8296:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_g8332:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne0152t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne10032:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne1032:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne1032t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne1072t:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
| cpe:2.3:h:lenovo:rackswitch_ne2572:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Lenovo |
- cpe:2.3:o:lenovo:cloud_networking_operating_system:*:*:*:*:*:*:*:* Versions before 10.10.6.0 Vulnerable ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_g8272:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_g8296:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_g8332:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne0152t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne10032:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne1032:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne1032t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne1072t:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
- cpe:2.3:h:lenovo:rackswitch_ne2572:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lenovo
Remediation
- Fix · CNA Cloud Networking Operating System (CNOS) (Lenovo) Fixed in 10.10.6.0
Timeline
- 2026-10-02 Threatist record created from CVE-2020-8349
- 2026-10-03 Alias added: GHSA-fqgv-5vgp-2frw
References
Sources
- CVE-2020-8349 · CVE Program
- CVE-2020-8349 · NVD
- FIRST EPSS
- GHSA-fqgv-5vgp-2frw · GitHub Advisory Database · CC BY 4.0
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