Security readout for executives and security teams
Plain-English summary
CVE-2021-1130 is a medium-severity XSS issue in Cisco DNA Center's web management interface. An attacker already holding administrative credentials could trick another interface user into opening a malicious link, letting script run in that user's browser session and potentially expose browser-held information.
Executive priority
Treat this as a moderate-priority administrative-plane risk. It is not described as unauthenticated or actively exploited, but compromise or misuse of privileged DNA Center access could affect sensitive network management workflows.
Technical view
The issue is CWE-79 improper input validation in the Cisco DNA Center web-based management interface. Exploitation requires network access, high privileges, and user interaction. Successful exploitation can execute arbitrary script in the interface context, with low confidentiality and integrity impact and no stated availability impact.
Likely exposure
Exposure is limited to organizations running Cisco DNA Center where administrative users can access the management interface. Risk increases if admin accounts are shared, overprivileged, or compromised, and if the interface is reachable from broader internal networks.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires administrative credentials on the affected device and persuading a user to click a crafted link, which lowers broad internet-scale risk but still matters for privileged environments.
Researcher notes
The source bundle names Cisco DNA Center but does not provide affected version ranges or fixed releases. Validate against Cisco's advisory before scoping remediation. Do not assume broader Cisco products are affected from the provided evidence.
Mitigation direction
- Check Cisco's advisory for affected and fixed DNA Center releases.
- Update Cisco DNA Center according to vendor guidance where applicable.
- Restrict management interface access to trusted administrative networks.
- Review and reduce administrative account privileges and sharing.
- Train administrators to treat unexpected management-interface links as suspicious.
Validation and detection
- Inventory Cisco DNA Center deployments and exposed management interfaces.
- Compare deployed versions against Cisco's advisory and remediation guidance.
- Confirm administrative access is limited to approved users and networks.
- Review browser and application security monitoring for suspicious management-interface activity.
- Document whether fixed-release details were available for each deployment.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-1130 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
- 4.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/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:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.8MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20210113 Cisco DNA Center Cross-Site Scripting 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 Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.