CVE-2021-40870

Published: Sep 13, 2021Updated: Nov 10, 2025 Sources: CVE List NVD BDUCWE-23

9.8CRITICAL

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

Open in CVSS calculator →

Weaknesses

CWE-23

Affected Products

Aviatrix Systems, Inc.

commercialaka aviatrix

Aviatrix ControllerSaaS

Networking Infrastructure / vpn-gateway

aviatrix

commercial·US

controllerSaaS

Networking Infrastructure / vpn-gateway

and 1 more affected products View all →

Exploitability

CISA Known Exploited Vulnerability

Added to KEV:Jan 18, 2022

Remediation due:Feb 1, 2022

Required action: Apply updates per vendor instructions.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

Official Patch Available

Is your org exposed to CVE-2021-40870?Discuss checks for your systems with a specialist. Scope agreed before testing. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique

Discovery

View detailed technique mapping

References

https://docs.aviatrix.com/HowTos/UCC_Release_Notes.html#security-note-9-11-2021

docs.aviatrix.com

https://wearetradecraft.com/advisories/tc-2021-0002/

wearetradecraft.com

http://packetstormsecurity.com/files/164461/Aviatrix-Controller-6.x-Path-Traversal-Code-Execution.html

packetstormsecurity.com

and 3 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-40870 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows