Security readout for executives and security teams
Plain-English summary
CVE-2020-3383 affects Cisco Data Center Network Manager. An authenticated remote user could abuse weak archive path validation to write files outside the intended location. That can threaten confidentiality, integrity, and availability because files may be written with the logged-in user's privileges.
Executive priority
Treat this as a high-priority management-plane issue if DCNM is deployed. It requires credentials, but compromise of a valid account could lead to arbitrary file writes on infrastructure management systems.
Technical view
Cisco describes a path traversal flaw in DCNM's archive utility caused by improper validation of paths embedded in archive files. Exploitation requires authentication but no user interaction, and Cisco assigned CVSS 3.1 score 8.8 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to organizations running Cisco Data Center Network Manager, especially where authenticated users can reach the DCNM management interface remotely. The source bundle does not identify affected version ranges.
Exploitation context
The CVE record says exploitation requires low complexity, network access, and low privileges. The provided bundle does not show CISA KEV listing or any cited evidence of active exploitation.
Researcher notes
The source bundle identifies CWE-20 and an archive path validation failure. Affected versions and specific fixed releases are not provided in the bundle, so validation should pivot to Cisco's advisory and local DCNM inventory.
Mitigation direction
- Check Cisco's advisory for affected releases and fixed DCNM versions.
- Upgrade or apply Cisco-recommended remediation when identified for your deployment.
- Restrict DCNM management access to trusted administration networks.
- Review DCNM accounts and remove stale or unnecessary authenticated users.
- Monitor file integrity and logs for unexpected file creation on DCNM hosts.
Validation and detection
- Inventory all Cisco DCNM instances and confirm ownership.
- Compare deployed DCNM versions against Cisco's advisory.
- Verify management interfaces are not broadly reachable.
- Review recent DCNM user activity for unusual archive operations.
- Check host logs for unexpected file writes by DCNM-related processes.
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-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-2020-3383 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- 20200729 Cisco Data Center Network Manager 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 Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.