Security readout for executives and security teams
Plain-English summary
Cisco DNA Center may store some credentials in clear text where an authenticated remote user can view them. Those credentials could let the user discover or manage network devices they normally could not access. This is not unauthenticated takeover, but it creates material risk in environments where DNA Center manages important infrastructure.
Executive priority
Treat this as a moderate infrastructure risk. It is most urgent where many network devices are centrally managed through DNA Center or where non-administrators have broad visibility. Prioritize verification, access review, and vendor-guided remediation.
Technical view
CVE-2020-3391 is an information disclosure flaw in Cisco DNA Center caused by insecure storage of certain unencrypted credentials. Exploitation requires authenticated remote access and can expose credentials through network device configuration visibility. CVSS is 6.5 with high confidentiality impact and no integrity or availability impact in the listed vector.
Likely exposure
Exposure is limited to organizations running Cisco DNA Center. The source bundle does not identify exact affected versions, so owners must verify their installed releases against Cisco's advisory.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. An attacker needs valid authenticated access, then could view stored clear-text credentials and reuse them to discover or manage network devices.
Researcher notes
Evidence supports authenticated information disclosure only. The bundle lists CWE-200, CVSS 6.5, and no exact affected versions or exploit-in-the-wild signal. Avoid assuming unauthenticated access, remote code execution, or specific fixed releases without Cisco advisory confirmation.
Mitigation direction
- Check Cisco's advisory for affected releases, fixed versions, and any official workarounds.
- Restrict Cisco DNA Center access to trusted administrative users only.
- Review role permissions for viewing network device configurations.
- Rotate any network device credentials that may have been exposed.
- Monitor DNA Center access and network device management activity.
Validation and detection
- Inventory all Cisco DNA Center deployments and ownership.
- Compare installed versions with Cisco's advisory.
- Confirm who can view network device configurations in DNA Center.
- Review logs for unusual configuration viewing or device management.
- Identify credentials stored for managed network devices.
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-200: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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 lookupCVE-2020-3391 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
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200701 Cisco Digital Network Architecture Center Information Disclosure 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.
Exposure of Sensitive Information to an Unauthorized Actor
Exposure of Sensitive Information to an Unauthorized Actor represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.