Security readout for executives and security teams
CVE-2021-40870 lets an unauthenticated attacker upload a dangerous file to vulnerable Aviatrix Controller 6.x systems and execute code. For executives, this is a remote takeover risk for a cloud networking control plane, with CISA KEV confirming known exploitation. Organizations running Aviatrix Controller 6.x below 6.5-1804.1922 are the stated exposure group. The bundle does not provide CPEs or detailed deployment conditions, so asset inventory must confirm versions and internet reachability. Treat as urgent. This is a critical unauthenticated remote code execution issue in a cloud networking controller, and CISA lists it as known exploited. Patch or isolate affected systems immediately. Mitigation focus: Upgrade affected Aviatrix Controller 6.x systems to 6.5-1804.1922 or later.; Review Aviatrix security note and current vendor guidance before remediation.; Prioritize externally reachable controllers for immediate remediation..
Michael Williams reviewed this cited source version on .
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Execution behavior lookup
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Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40870 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://docs.aviatrix.com/HowTos/UCC_Release_Notes.html#security-note-9-11-2021CVE reference · x_refsource_MISC
- https://wearetradecraft.com/advisories/tc-2021-0002/CVE reference · x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40870CVE reference · government-resource
Products and packages named in the record
CWE details
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