# CVE-2021-40870: Aviatrix Controller Unrestricted Upload of File

> CVE-2021-40870: Aviatrix Controller Unrestricted Upload of File. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-40870
Last updated: 2025-10-21T23:25:33Z

- Published: 2021-09-13 07:41 UTC · Updated: 2025-10-21 23:25 UTC · Assigner: mitre
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 93.0%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-01-18, federal due date 2022-02-01, ransomware use: Unknown

## Description

An issue was discovered in Aviatrix Controller 6.x before 6.5-1804.1922. Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversal.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Aviatrix: Aviatrix Controller

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-40870)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-40870)
- [http://packetstormsecurity.com/files/164461/Aviatrix-Controller-6.x-Path-Traversal-Code-Execution.html](http://packetstormsecurity.com/files/164461/Aviatrix-Controller-6.x-Path-Traversal-Code-Execution.html)
- [https://docs.aviatrix.com/HowTos/UCC\_Release\_Notes.html\#security-note-9-11-2021](https://docs.aviatrix.com/HowTos/UCC_Release_Notes.html#security-note-9-11-2021)
- [https://wearetradecraft.com/advisories/tc-2021-0002/](https://wearetradecraft.com/advisories/tc-2021-0002/)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-40870 · Markdown: https://rewindex.com/cve/CVE-2021-40870.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-40870 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:05:40.660Z