Security readout for executives and security teams
Plain-English summary
CVE-2026-20076 is a stored cross-site scripting issue in Cisco Identity Services Engine’s web management interface. An attacker needs valid administrative credentials and must get another interface user to view affected content. Business impact is limited but relevant: theft of browser-based information or actions in the management interface context could affect network access administration.
Executive priority
Treat as a scheduled but timely remediation item. It is not listed as actively exploited and requires admin credentials, but ISE is security-critical infrastructure. Prioritize validation and vendor-guided updates for internet-adjacent or broadly reachable management interfaces.
Technical view
Cisco ISE web management interface insufficiently validates user-supplied input, enabling authenticated remote administrators to store script content on specific pages. When a user views the affected page, arbitrary script can execute in that interface context. CVSS 3.1 is 4.8: network attack vector, low complexity, high privileges required, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Exposure is limited to organizations running affected Cisco Identity Services Engine Software versions listed by Cisco/CVE. Risk is highest where multiple administrators or delegated admins can access ISE and where management access is reachable from broader internal networks.
Exploitation context
The attacker must already possess valid administrative credentials. Exploitation also requires a user of the management interface to interact with or view the affected page. The source bundle does not indicate active exploitation, and KEV status is false.
Researcher notes
Evidence supports stored XSS in Cisco ISE management UI with CWE-79 and CVSS 4.8. The bundle lists affected versions but does not provide fixed-version details. Do not assume exploit availability or active exploitation from this data alone.
Mitigation direction
- Review Cisco’s advisory for fixed releases or vendor-recommended remediation.
- Restrict ISE management interface access to trusted administrative networks.
- Limit administrative accounts to least privilege where operationally possible.
- Audit and remove unnecessary or stale ISE administrator accounts.
- Monitor Cisco advisory updates for corrected version guidance.
Validation and detection
- Inventory Cisco ISE deployments and record exact software and patch versions.
- Compare installed versions against the affected version list in the advisory.
- Confirm management interface exposure is limited to authorized admin networks.
- Review ISE administrator accounts for necessity and recent activity.
- Check vendor guidance before relying on scanners alone.
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-2026-20076 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
- cisco-sa-ise-xss-9TDh2kxCVE reference
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.