Security readout for executives and security teams
Plain-English summary
An administrator-level account on a vulnerable Cisco NFVIS device could abuse filesystem command handling to read or overwrite files on the underlying operating system. This is high impact because it can affect confidentiality, integrity, and availability, but the attacker already needs administrator privileges.
Executive priority
Prioritize remediation for NFVIS systems in production or exposed management environments. The issue has severe potential impact, but urgency is moderated by the requirement for administrator credentials and no cited evidence of active exploitation.
Technical view
CVE-2019-1894 is an improper input validation flaw in Cisco Enterprise NFV Infrastructure Software filesystem commands. A remote authenticated attacker with administrator privileges can supply crafted variables during an affected command and read or overwrite arbitrary underlying OS files. CVSS 3.0 is 7.2 with high CIA impact.
Likely exposure
Exposure is limited to environments running Cisco Enterprise NFV Infrastructure Software where an attacker can authenticate with administrator privileges. The source bundle does not identify specific affected versions or CPEs, so inventory must be matched against Cisco's advisory.
Exploitation context
The provided sources describe a remote authenticated attack path requiring administrator privileges and low attack complexity. The CVE is not listed as KEV in the bundle, and no cited source here states active exploitation.
Researcher notes
The key weakness is improper input validation in NFVIS filesystem commands, classified as CWE-20. Evidence in the bundle lacks exact affected versions, fixed releases, and exploit prevalence, so validation should focus on Cisco advisory matching and privileged access review.
Mitigation direction
- Review Cisco's advisory for affected and fixed NFVIS releases.
- Restrict NFVIS administrative access to trusted management networks and accounts.
- Audit and remove unnecessary administrator-level NFVIS access.
- Monitor Cisco guidance for any updated remediation or workaround details.
Validation and detection
- Inventory Cisco Enterprise NFV Infrastructure Software deployments.
- Compare installed NFVIS versions against Cisco's advisory.
- Review administrator account use and recent NFVIS filesystem command activity.
- Check whether management access is reachable from untrusted networks.
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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CWE-20: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 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-2019-1894 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/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:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20190703 Cisco Enterprise NFV Infrastructure Software Arbitrary File Read and Write 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.