Security readout for executives and security teams
Plain-English summary
CVE-2020-3377 is an authenticated command injection issue in Cisco Data Center Network Manager's Device Manager application. A user with access could submit crafted input and run commands as the DCNM administrator. The business concern is compromise of a network-management platform, not broad unauthenticated internet exploitation.
Executive priority
Treat this as a moderate-priority infrastructure management risk. It is not reported as actively exploited in the supplied sources, but compromise of DCNM could affect operational control of data center networking.
Technical view
Cisco describes insufficient validation of user-supplied input in a specific Device Manager application field. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L, score 6.3. The flaw maps to CWE-78 and can allow command execution with administrator privileges on DCNM.
Likely exposure
Exposure is most likely where Cisco Data Center Network Manager is deployed and authenticated users can reach Device Manager. The source bundle does not provide affected version ranges, so teams must confirm applicability against Cisco's advisory and their installed DCNM versions.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires authenticated remote access and crafted arguments to a vulnerable application field. Successful exploitation can affect confidentiality, integrity, and availability at low impact levels per CVSS.
Researcher notes
Key unknowns are exact affected versions and Cisco's fixed-release details, which are not included in the prompt bundle. Avoid assuming exploitability without authenticated access. Prioritize asset/version validation and log review over speculative testing.
Mitigation direction
- Check Cisco's advisory for fixed releases and vendor-recommended remediation.
- Inventory Cisco DCNM deployments and confirm whether Device Manager is enabled.
- Restrict DCNM management access to trusted administrative networks and users.
- Remove unnecessary DCNM accounts and privileges.
- Monitor DCNM hosts for unexpected administrator-level command activity.
Validation and detection
- Identify all Cisco DCNM instances and record installed versions.
- Compare each deployment against the Cisco advisory applicability details.
- Review DCNM authentication logs for unusual low-privileged user activity.
- Check system logs for unexpected commands or administrator-context process activity.
- Confirm management interfaces are not broadly reachable.
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-78: 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-2020-3377 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
- 6.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L2.83.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- 20200729 Cisco Data Center Network Manager 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 an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.