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

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-01-18. EPSS: 93% chance of exploitation in the next 30 days.

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.

Affected products

• Aviatrix Controller: from 6.2, before 6.2.2043 (fixed in 6.2.2043); from 6.3, before 6.3.2490 (fixed in 6.3.2490); from 6.4, before 6.4.2838 (fixed in 6.4.2838); from 6.5, before 6.5.1922 (fixed in 6.5.1922)

Published 2021-09-13. Last modified 2026-06-17.