Security readout for executives and security teams
Plain-English summary
This Cisco NFVIS flaw lets someone who already has valid administrative access abuse the local CLI to reach the underlying operating system as root and read or overwrite files. It is not described as remotely exploitable by unauthenticated attackers, but the impact is serious if admin credentials are misused.
Executive priority
Treat this as a controlled but meaningful infrastructure risk. It is not described as internet unauthenticated exploitation, but compromised or misused admin access could become full device operating system control.
Technical view
CVE-2020-3236 is a CWE-22 path traversal issue in Cisco Enterprise NFV Infrastructure Software CLI argument handling. An authenticated local attacker with administrative credentials can use path traversal through a vulnerable command to gain root shell access and read or overwrite arbitrary files on the affected device.
Likely exposure
Exposure is likely limited to organizations running Cisco Enterprise NFV Infrastructure Software where attackers can obtain administrative credentials and local CLI access. The source bundle does not provide affected version ranges or CPEs.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid administrative credentials and local access, but successful exploitation gives root-level operating system control and arbitrary file read/write capability.
Researcher notes
Key evidence gaps are version specificity, fixed-release details, and exploit telemetry. Use Cisco’s advisory as the authoritative remediation source and avoid assuming broader Cisco product exposure from this record alone.
Mitigation direction
- Review Cisco’s advisory for affected and fixed NFVIS software guidance.
- Inventory all Cisco Enterprise NFV Infrastructure Software deployments.
- Restrict NFVIS administrative access to trusted operators only.
- Review and harden administrative credential management.
- Monitor NFVIS administrative activity for unexpected CLI use.
Validation and detection
- Confirm whether Cisco NFVIS is deployed in the environment.
- Compare deployed NFVIS versions against Cisco’s advisory.
- Review administrative account lists for unnecessary access.
- Check logs for unexpected privileged CLI activity.
- Assess whether NFVIS management access is tightly restricted.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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 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-2020-3236 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
- 6.7 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:L/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:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H0.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.7MediumVector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200617 Cisco Enterprise NFV Infrastructure Software Path Traversal 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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.