# CVE-2021-40870

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.

- Page: https://www.vulneraibility.com/cve/CVE-2021-40870
- CVSS: 9.8
- Known exploited: yes, in CISA KEV since 2022-01-18; CISA due date 2022-02-01
- EPSS: 93.02% (percentile 99.8)
- Unvetted proof-of-concept code on GitHub: 4 GitHub proofs of concept · 1 Nuclei template (first 2021-10-07)
- CISA SSVC: exploitation active, automatable yes, technical impact total (assessed 2025-02-04)
- Published: 2021-09-13

## Affected

- aviatrix:controller

## References

- [other] https://docs.aviatrix.com/HowTos/UCC_Release_Notes.html#security-note-9-11-2021
- [other] https://wearetradecraft.com/advisories/tc-2021-0002/
- [other] http://packetstormsecurity.com/files/164461/Aviatrix-Controller-6.x-Path-Traversal-Code-Execution.html
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40870

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.