Security readout for executives and security teams
Plain-English summary
This is a browser-side vulnerability in Cisco Small Business switch management pages. An attacker would need to convince a management-interface user to open a malicious link, then script could run in that user’s interface context and expose browser-based information or alter interface actions.
Executive priority
Treat as a moderate operational risk. It is not shown as actively exploited, but exposed management interfaces and reused administrator browsers can raise business impact. Prioritize remediation during network device maintenance.
Technical view
CVE-2019-12718 is a CWE-79 cross-site scripting issue in the web-based interface of affected Cisco Small Business Smart and Managed Switches. The listed affected product is Cisco Small Business 200 Series Smart Switches. CVSS v3.0 is 6.1, with network attack vector, no privileges required, and user interaction required.
Likely exposure
Exposure is most likely where Cisco Small Business 200 Series Smart Switches are still deployed and administrators use the device web interface. Internet exposure is not stated in the sources; validate management access paths locally.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Exploitation requires social engineering a web-interface user into clicking a malicious link and then visiting a specific interface page.
Researcher notes
Evidence is limited to the CVE record and Cisco advisory metadata in the bundle. The vulnerability is XSS with changed scope and low confidentiality and integrity impact. Do not assume affected versions beyond the supplied product entry.
Mitigation direction
- Review the Cisco advisory for affected releases, fixed software, and supported remediation.
- Apply vendor-approved firmware updates or workarounds when confirmed for your model.
- Limit web interface use to trusted administrators while remediation is assessed.
- Retire or replace unsupported affected switches where vendor fixes are unavailable.
Validation and detection
- Inventory Cisco Small Business 200 Series Smart Switches in all managed environments.
- Confirm whether administrators use the web-based management interface.
- Compare device model and firmware details against the Cisco advisory.
- Review access controls for switch management interfaces and administrative browsing paths.
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-2019-12718 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
- 6.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/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:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.1MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco Small Business Smart and Managed Switches 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.