Security readout for executives and security teams
Plain-English summary
CVE-2019-12716 is a cross-site scripting flaw in Cisco Unified Communications Manager and its Session Management Edition web interface. An attacker does not need credentials, but must persuade a user to click a crafted link. Successful exploitation could run script in that user's browser context or access browser-based information.
Executive priority
Treat as a moderate-priority exposure unless the management interface is widely reachable or heavily used by privileged staff. The likely business risk is browser-session compromise or information access through social engineering, not direct unauthenticated takeover.
Technical view
The vulnerability is CWE-79 from insufficient validation of user-supplied input in the affected Cisco web interface. CVSS 3.0 is 6.1: network exploitable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is most relevant where Cisco Unified Communications Manager or Unified Communications Manager SME web interfaces are reachable by administrators or users who may follow external links. The source bundle does not specify affected versions or CPEs, so asset owners must confirm status against Cisco's advisory.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires social engineering a user of the interface into opening a crafted link, making phishing resistance and management-interface exposure important factors.
Researcher notes
Do not assume more affected products or fixed versions than the sources provide. The key technical constraints are UI-required exploitation, no privileges required, and XSS impact limited to browser context with low confidentiality and integrity ratings.
Mitigation direction
- Check Cisco's advisory for affected releases and fixed software guidance.
- Apply Cisco-provided updates if your installed release is listed as affected.
- Restrict access to the management web interface to trusted networks and users.
- Warn administrators and helpdesk users about unsolicited links targeting management portals.
- Prioritize remediation for internet-reachable or broadly accessible management interfaces.
Validation and detection
- Inventory Cisco Unified Communications Manager and SME deployments.
- Compare installed releases with Cisco's advisory applicability criteria.
- Confirm management web interfaces are not publicly reachable unless explicitly required.
- Review who has access to the affected web interface.
- Document whether remediation is patching, access restriction, or vendor-guided exception handling.
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-2019-12716 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
- 20191002 Cisco Unified Communications Manager 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.