CVE-2021-40870
9.8
CRITICAL
CVSS 3.1
EPSS 93.0% · 100th pctCISA KEV · Exploited in the wild
2021-09-13Updated 2025-10-21KEV 2022-01-18
CISA Known Exploited Vulnerabilities
Aviatrix Controller Unrestricted Upload of File is confirmed as actively exploited and is listed in the CISA KEV catalog.
Added to KEV
2022-01-18
Remediation due
2022-02-01
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-40870
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.
Severity
CVSS 3.1 · CISA9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSSVC · CISA-ADP
Exploitationactive
Automatableyes
Technical impacttotal
Exploitation Context
as of October 17, 2026- CISA added CVE-2021-40870 to the KEV catalog 127 days after its CVE record was published.
- It is one of 2 Aviatrix entries in the CISA KEV catalog, and the only one added in 2022.
- Its current EPSS score (93.0%) is higher than that of 76% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| - | - | n/a |
References
3 LinksRecord Details
Published
2021-09-13
Last updated
2025-10-21
Assigner (CNA)
mitre
Credited to
-
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.