Security readout for executives and security teams
Plain-English summary
CVE-2019-1973 is a medium-severity Cisco NFVIS web portal issue. An authenticated attacker who can alter log content could cause malicious script to run when another user views that log in the web interface, potentially exposing browser-based information or affecting interface actions.
Executive priority
Treat this as a moderate-priority management-plane issue. It is not listed as actively exploited, but NFVIS can support critical network functions, so affected deployments should be identified and remediated through Cisco guidance.
Technical view
The vulnerability is CWE-79 XSS in Cisco Enterprise NFV Infrastructure Software’s web portal framework. It stems from improper validation of stored log file content. CVSS 3.0 is 4.8 with network access, low complexity, high privileges required, user interaction required, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to organizations running Cisco Enterprise NFV Infrastructure Software with the web-based interface in use. The source bundle does not identify affected versions, fixed releases, or whether Internet exposure is common.
Exploitation context
The provided sources do not show active exploitation, and KEV is false. Exploitation requires an authenticated remote attacker with high privileges to modify log content and a user to view the modified log in the NFVIS web interface.
Researcher notes
Evidence is sparse on affected versions and fixes in the supplied bundle. The key condition is stored log content rendered by the NFVIS web portal without sufficient validation, creating authenticated, user-assisted XSS risk.
Mitigation direction
- Review Cisco’s advisory for fixed software, workarounds, and upgrade applicability.
- Restrict NFVIS web portal access to trusted administrative users.
- Avoid viewing unexpected or untrusted log content in the portal until remediated.
- Prioritize remediation where NFVIS manages sensitive network functions.
Validation and detection
- Inventory Cisco Enterprise NFV Infrastructure Software deployments and management interfaces.
- Confirm installed NFVIS versions against Cisco’s advisory and asset records.
- Check whether authenticated users can modify logs viewed in the web portal.
- Review portal activity for unusual log viewing or administrative account misuse.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2019-1973 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
- 4.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/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:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
4.8MediumVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20190807 Cisco Enterprise NFV Infrastructure Software Cross-site Scripting 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 Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.