Security readout for executives and security teams
Plain-English summary
CVE-2019-1893 affects Cisco Enterprise NFV Infrastructure Software. A person who already has local shell access could abuse poor validation in a configuration file to run operating-system commands as root. This is not described as a remote internet exploit, but on affected NFVIS devices it could turn a local foothold into full device compromise.
Executive priority
Treat this as high priority for NFVIS systems in production or sensitive network segments. It is not evidenced as remotely exploitable from the sources provided, but successful abuse gives root-level control of the underlying device OS.
Technical view
Cisco describes a command injection flaw caused by insufficient input validation of a configuration file accessible to a local shell user. Exploitation requires authenticated local access, low complexity, low privileges, and no user interaction. Successful exploitation allows arbitrary command execution on the underlying OS as root, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to environments running Cisco Enterprise NFV Infrastructure Software. The source bundle does not name specific affected versions, so teams should inventory NFVIS deployments and compare them against Cisco's advisory.
Exploitation context
The CVE record does not indicate CISA KEV listing, and the provided sources do not claim active exploitation. The attacker must already be an authenticated local shell user, so the main concern is privilege escalation after credential compromise or insider misuse.
Researcher notes
CWE-77 command injection, CVSS 3.0 score 7.8, vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Affected versions are unspecified in the bundle. Do not assume exploit availability or fixed releases beyond Cisco advisory guidance.
Mitigation direction
- Review Cisco's advisory for affected-release and fixed-release guidance.
- Limit local shell access on NFVIS systems to necessary administrators.
- Audit local accounts and remove stale or unnecessary access.
- Monitor NFVIS systems for suspicious privileged OS activity.
- Prioritize remediation where NFVIS supports critical network services.
Validation and detection
- Inventory all Cisco NFVIS deployments and record software versions.
- Compare deployed versions against Cisco's advisory applicability guidance.
- Review who has local shell access to NFVIS systems.
- Check logs for unusual local sessions or root-level activity.
- Confirm remediation status after applying vendor guidance.
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-77: 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-2019-1893 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
- 7.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.8HighVector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20190703 Cisco Enterprise NFV Infrastructure Software 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 a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.