Security readout for executives and security teams
Plain-English summary
CVE-2019-1587 is an information disclosure issue affecting Cisco Nexus 9000 Series Fabric Switches in ACI mode. An authenticated remote user could trigger filtered query responses that reveal confidential system information. It requires valid access and is not listed as known exploited in CISA KEV, lowering urgency compared with unauthenticated or actively exploited flaws.
Executive priority
Treat this as a scheduled remediation item unless sensitive environments expose broad ACI management access. Prioritize faster if many users can authenticate to APIC or switch management interfaces, because disclosed system information can support later intrusion planning.
Technical view
Cisco describes improper validation of user-supplied input in filtered query handling. With low-privileged authenticated remote access, an attacker may cause returned messages to expose sensitive device information. CVSS v3.0 is 4.3, with network access, low attack complexity, low privileges required, no user interaction, and confidentiality-only impact.
Likely exposure
Exposure is most likely in environments running Cisco Nexus 9000 Series Fabric Switches in ACI mode. The bundle also lists Cisco APIC with unspecified versions, so teams should verify both ACI fabric switches and APIC-managed components against Cisco’s advisory.
Exploitation context
The provided sources do not show public exploitation or CISA KEV listing. Exploitation requires authenticated remote access and specific filtered query behavior, so risk depends heavily on who can reach and authenticate to the ACI management plane.
Researcher notes
The bundle gives clear impact and CVSS data but no fixed-version detail. Avoid assuming exploit availability or specific patches beyond Cisco advisory review. Key uncertainty is the exact affected release range, since versions are marked unspecified in the provided affected-product data.
Mitigation direction
- Review Cisco’s advisory for affected and fixed software guidance.
- Restrict ACI/APIC management access to trusted administrators and networks.
- Remove unnecessary user accounts and excessive privileges.
- Monitor Cisco guidance for any updated remediation details.
Validation and detection
- Inventory Nexus 9000 ACI-mode deployments and APIC-managed environments.
- Compare deployed versions with Cisco’s advisory once available to your team.
- Review management-plane access paths for unnecessary remote reachability.
- Check logs for unusual authenticated filtered-query activity.
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
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Open ATT&CK lookupCVE-2019-1587 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.3MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20190501 Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Filter Query Information Disclosure 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.
Resource Management Errors
Resource Management Errors represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.