CVE-2021-40870
KEVAviatrix Controller Unrestricted Upload of File
Description
Unrestricted upload of a file with a dangerous type is possible, which allows an unauthenticated user to execute arbitrary code via directory traversal.
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedSep 13, 2021
Last modifiedJun 17, 2026
Added to KEVJan 18, 2022
Remediation dueFeb 1, 2022
References
- packetstormsecurity.com/files/164461/Aviatrix-Controller-6.x-Path-Traversal-Code-Execution.htmlExploitThird Party Advisory
- docs.aviatrix.com/HowTos/UCC_Release_Notes.htmlRelease NotesVendor Advisory
- wearetradecraft.com/advisories/tc-2021-0002/ExploitThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40870US Government Resource
0 recent articles mention this CVE
88
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1730 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 93.0% · top 1% of all CVEs
- Weakness
- CWE-23
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.