Security readout for executives and security teams
CVE-2020-3243 is a critical Cisco UCS Director REST API issue. A remote unauthenticated attacker may bypass authentication or use directory traversal against an affected device, with high confidentiality, integrity, and availability impact. Treat exposed UCS Director systems as urgent until version and remediation status are confirmed. Exposure is most relevant where Cisco UCS Director or UCS Director Express for Big Data is deployed and its REST API is reachable by untrusted networks. The bundle does not provide affected version ranges, so asset and version validation must rely on Cisco's advisory. Prioritize this as a critical infrastructure-management platform risk. If exposed, compromise could affect cloud or data-center orchestration. Assign immediate ownership to infrastructure and security teams to confirm exposure, follow Cisco remediation, and reduce API reachability. Mitigation focus: Identify all Cisco UCS Director and UCS Director Express for Big Data instances.; Review Cisco advisory cisco-sa-ucsd-mult-vulns-UNfpdW4E for affected releases and fixed software.; Apply Cisco's vendor-provided remediation for affected deployments..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-20: Exact CWE 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-2020-3243 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
9.8CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200415 Multiple Vulnerabilities in Cisco UCS Director and Cisco UCS Director Express for Big DataCVE reference · vendor-advisory, x_refsource_CISCO
- https://www.zerodayinitiative.com/advisories/ZDI-20-540/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.