Security readout for executives and security teams
Plain-English summary
This flaw lets a logged-in remote user bypass intended role limits in Cisco Vision Dynamic Signage Director. The business impact is limited but real: a lower-privileged user could view or delete certain screen content they should not control.
Executive priority
Prioritize remediation where the platform manages public, safety, venue, or customer-facing signage. The CVSS score is medium, but unauthorized content deletion can disrupt operations or create reputational impact in visible environments.
Technical view
CVE-2020-3485 is an RBAC handling failure in the web management software of Cisco Vision Dynamic Signage Director. Cisco describes exploitation as an authenticated remote attacker sending a crafted HTTP request, potentially causing unauthorized access to specific screen content and deletion of that content.
Likely exposure
Exposure is limited to organizations running Cisco Vision Dynamic Signage Director with web management access available to authenticated users. The supplied sources do not identify affected version numbers, so version-specific exposure requires Cisco advisory review.
Exploitation context
The CVE requires low privileges, network access, and no user interaction. The source bundle does not show CISA KEV listing or other evidence of active exploitation. Treat this as an access-control weakness with content confidentiality, integrity, and availability impact.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the supplied bundle. Affected versions and fixed releases are not included here. Do not assume broader Cisco product impact without vendor confirmation.
Mitigation direction
- Review Cisco’s advisory for affected releases and vendor remediation guidance.
- Inventory Cisco Vision Dynamic Signage Director deployments and administrative access paths.
- Limit web management access to trusted administrative networks and users.
- Review RBAC assignments and remove unnecessary low-privilege accounts.
- Monitor for unexpected screen content access or deletion events.
Validation and detection
- Confirm whether Cisco Vision Dynamic Signage Director is deployed in the environment.
- Compare deployed versions against Cisco’s advisory applicability details.
- Review role definitions for users with web management access.
- Check logs for unauthorized content views or deletions.
- Validate RBAC behavior using authorized, non-production testing only.
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
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CWE-264: Exact CWE lookup
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Open ATT&CK lookupCVE-2020-3485 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
- 20200819 Cisco Vision Dynamic Signage Director Role-Based Access Control 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.
Permissions, Privileges, and Access Controls
Permissions, Privileges, and Access Controls represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.