Security readout for executives and security teams
Plain-English summary
CVE-2021-1487 lets an authenticated remote user run operating-system commands through Cisco Prime Infrastructure or Cisco EPN Manager’s web management interface. The commands run as a special non-root user, but Cisco describes major follow-on risk: sensitive data access, configuration changes, device credential exposure, and disruption to managed devices.
Executive priority
Prioritize this as high where Cisco network management platforms are reachable by many users or exposed beyond a restricted admin network. The business risk is not only server compromise; it includes control-plane impact across managed devices and potential exposure of device credentials.
Technical view
The issue is CWE-78 command injection caused by insufficient validation of user-supplied input in the web-based management interface. Exploitation requires network access and low-privileged authentication, with no user interaction. Cisco and CVE data rate it CVSS 3.1 8.8 high, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely in organizations running Cisco Prime Infrastructure or Cisco EPN Manager where authenticated users can reach the web management interface. Product versions are not specified in the provided bundle, so teams must verify affected releases against Cisco’s advisory.
Exploitation context
The provided sources describe remote authenticated exploitation using crafted HTTP requests. The bundle does not state active exploitation, public exploit availability, or CISA KEV listing. Treat this as serious because compromise of a management platform can affect downstream network devices.
Researcher notes
Evidence supports authenticated command injection with high impact, but the provided bundle lacks affected version detail, fixed-release detail, exploit maturity, and detection indicators. Validation should focus on asset/version confirmation, access paths to the web UI, account scope, and suspicious management actions.
Mitigation direction
- Review Cisco’s advisory for affected and fixed software guidance.
- Restrict web management interface access to trusted administrative networks.
- Remove unnecessary accounts and enforce least-privilege access.
- Monitor for unexpected configuration pushes or credential retrieval activity.
- Prioritize remediation for internet-exposed or broadly reachable management interfaces.
Validation and detection
- Inventory Cisco Prime Infrastructure and Cisco EPN Manager deployments.
- Compare deployed releases with Cisco’s advisory.
- Confirm only authorized administrators can reach the web interface.
- Review logs for unusual authenticated management-interface activity.
- Check managed devices for unexpected configuration changes.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. 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 lookupCVE-2021-1487 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20210519 Cisco Prime Infrastructure and Cisco Evolved Programmable Network Manager Command Injection VulnerabilityCVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
