Security readout for executives and security teams
Plain-English summary
CVE-2021-1580 affects Cisco APIC or Cisco Cloud APIC web UI and API endpoints. A remote attacker with high privileges could inject commands or upload files, risking sensitive data exposure or unauthorized changes. The source bundle does not provide affected versions or fixed releases.
Executive priority
Treat as a targeted management-plane risk, not a broad internet worm risk. Prioritize if APIC administers critical network fabric, is widely reachable, or privileged credential controls are weak.
Technical view
The CVE describes multiple Cisco APIC and Cisco Cloud APIC web UI/API vulnerabilities involving command injection and file upload. CVSS 3.1 is 6.5: network reachable, low complexity, high privileges required, no user interaction, unchanged scope, high confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is most relevant where Cisco APIC or Cisco Cloud APIC management interfaces are reachable by administrators or other highly privileged accounts. Public or broadly reachable management planes increase concern. Version-level exposure cannot be confirmed from the provided bundle.
Exploitation context
The bundle does not cite active exploitation, and CISA KEV status is false. Exploitation requires high privileges, which lowers broad attack likelihood but keeps insider, credential-theft, and compromised-admin scenarios important.
Researcher notes
Evidence is limited to the CVE summary, CVSS vector, CWE-284, KEV=false, and Cisco advisory reference. The bundle does not include affected release ranges, fixed versions, indicators of compromise, or workaround details.
Mitigation direction
- Review Cisco advisory for affected and fixed release guidance.
- Restrict APIC and Cloud APIC management UI/API access to trusted networks.
- Enforce least privilege for APIC administrative accounts.
- Use MFA and strong credential controls for privileged access.
- Monitor for unexpected file uploads or configuration changes.
Validation and detection
- Inventory Cisco APIC and Cloud APIC deployments.
- Compare deployed versions against Cisco's advisory guidance.
- Confirm management UI/API exposure is limited to authorized paths.
- Review privileged account activity for unusual UI/API operations.
- Check logs for unexplained file upload or command-related events.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
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-2021-1580 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
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:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N1.25.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20210825 Cisco Application Policy Infrastructure Controller Command Injection and File Upload VulnerabilitiesCVE reference · vendor-advisory, x_refsource_CISCO
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 Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.