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PatchSiren cyber security CVE debrief

CVE-2021-40870 Aviatrix CVE debrief

CVE-2021-40870 is a vulnerability in Aviatrix Controller described as an unrestricted file upload issue. CISA lists it in the Known Exploited Vulnerabilities catalog, which raises the defensive urgency even though the supplied corpus does not include a full technical writeup or vendor remediation bulletin.

Vendor
Aviatrix
Product
Aviatrix Controller
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-01-18
Original CVE updated
2022-01-18
Advisory published
2022-01-18
Advisory updated
2022-01-18

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-40870 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-40870

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-40870 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-40870

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.