CVE-2021-40870 Aviatrix CVE debrief

Who should care

Organizations running Aviatrix Controller, especially security, cloud networking, and vulnerability management teams responsible for patching internet-facing or operationally sensitive management services.

Technical summary

The available source material identifies the issue as an unrestricted upload of file in Aviatrix Controller. The corpus does not provide additional technical detail about the upload path, prerequisites, impact scope, or exploitation chain. CISA’s KEV listing confirms it is considered known exploited and instructs applying updates per vendor instructions.

Defensive priority

High. CISA has added this CVE to the Known Exploited Vulnerabilities catalog, so it should be treated as a priority remediation item and verified against current vendor guidance.

Recommended defensive actions

• Apply Aviatrix’s updates or mitigations per vendor instructions as soon as possible.
• Check whether any Aviatrix Controller deployments are exposed or reachable from untrusted networks.
• Inventory versions and confirm which environments are affected before and after patching.
• Review logs and change history around Aviatrix Controller for unexpected file upload activity.
• Validate that file upload controls, authentication, and access restrictions are correctly enforced after remediation.

Evidence notes

Evidence is limited to the supplied CVE metadata and official sources. CISA’s KEV entry names the product, issue type, date added (2022-01-18), due date (2022-02-01), and required action: apply updates per vendor instructions. The provided corpus does not include a vendor advisory, CVSS score, exploit details, or impact statement beyond the title.

Official resources