CVE DATABASE / CVE-2021-40870
CVE-2021-40870
Aviatrix Controller Unrestricted Upload of File
CVSS 9.8 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2022-01-18.
Federal remediation due 2022-02-01.
Required action: Apply updates per vendor instructions.
Summary
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.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Aviatrix controller
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References
- 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://wearetradecraft.com/advisories/tc-2021-0002/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40870
Data: NIST NVD + CISA KEV. NVD last modified 2025-11-10. Always verify against the vendor advisory before acting.