VULNERABILITY INTELLIGENCE

CVE-2020-8349

CVSS score9.8 CRITICAL
EPSS probability2.25%
CISA KEVNot currently listed
Published2020-10-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • CWE-20: Improper Input Validation
  • CWE-94: Improper Control of Generation of Code ('Code Injection')

Primary references