Security readout for executives and security teams
Plain-English summary
Cisco ISE’s web management interface can mishandle user-supplied input, allowing an authenticated remote attacker to cause script execution in another interface user’s browser. Business impact is mainly loss of trust in the management console, possible exposure of browser-held sensitive data, and limited integrity impact inside an administrative security platform.
Executive priority
Treat as a scheduled remediation item for Cisco ISE environments, with higher urgency where the management interface is broadly reachable or many administrators use it. It is not shown as actively exploited in the provided sources.
Technical view
CVE-2019-12638 is a stored XSS issue in Cisco Identity Services Engine Software. The flaw is insufficient input validation in the web-based management interface. Exploitation requires low complexity, network access, attacker authentication, and user interaction. Successful exploitation can execute arbitrary script in the interface context or access sensitive browser-based information.
Likely exposure
Exposure is limited to organizations running Cisco Identity Services Engine Software with accessible web-based management interfaces. The source bundle does not specify affected version ranges, so teams must compare deployed ISE versions against Cisco’s advisory and internal asset inventory.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires an authenticated remote attacker and a management-interface user persuaded to click a crafted link. Impact is confidentiality and integrity, not availability, with CVSS 3.0 score 5.4.
Researcher notes
The record identifies CWE-79 and a stored XSS condition, but the supplied bundle does not include affected version ranges, fixed releases, or proof-of-concept details. Avoid assuming broader Cisco product exposure without vendor confirmation.
Mitigation direction
- Review Cisco’s advisory for affected releases and vendor-provided fixed software guidance.
- Apply Cisco-recommended updates or workarounds where applicable.
- Restrict ISE management access to trusted administrative networks and VPN paths.
- Limit ISE administrative privileges to users with operational need.
- Warn ISE administrators about suspicious links targeting the management interface.
Validation and detection
- Inventory all Cisco ISE Software deployments and their web management exposure.
- Compare installed ISE versions against the Cisco advisory.
- Review administrative accounts for unnecessary access to the web interface.
- Check security logs for unusual management-interface activity around administrator sessions.
- Confirm compensating access controls limit who can reach the management interface.
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-2019-12638 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
- 5.4 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.4MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20191016 Cisco Identity Services Engine Stored 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.