Security readout for executives and security teams
Plain-English summary
Cisco ISE has a management-interface XSS flaw. A logged-in attacker with administrative credentials could plant script on specific pages and target another interface user, potentially exposing browser-held information or altering what that user sees. This is not described as unauthenticated or actively exploited.
Executive priority
Handle within the normal medium-severity remediation SLA. Escalate if ISE administration is broadly reachable, admin credentials are weak, or privileged account compromise is suspected.
Technical view
CVE-2020-26083 is CWE-79 in Cisco Identity Services Engine Software. Improper validation of user-supplied input in the web management interface allows authenticated remote administrative users to inject script executed in another user’s browser context. CVSS 3.1 is 4.8: network reachable, low complexity, high privileges, user interaction required, changed scope.
Likely exposure
Exposure is limited to organizations running Cisco ISE where the web management interface is reachable and attacker-controlled or compromised administrative credentials exist. Broad admin access, shared accounts, or externally reachable management paths increase practical risk.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. Exploitation requires valid administrative credentials and a victim user interacting with affected management-interface pages, which lowers mass-exploitation likelihood but matters for insider or credential-compromise scenarios.
Researcher notes
The source bundle does not provide affected version ranges, exploit details, or explicit fixed versions. Analysis should therefore stay anchored to Cisco’s advisory. The key constraints are PR:H and UI:R, with impact limited to confidentiality and integrity, not availability.
Mitigation direction
- Review Cisco’s advisory for affected and fixed release guidance.
- Upgrade or patch according to Cisco’s published remediation instructions.
- Restrict ISE management access to trusted admin networks or VPN.
- Reduce administrative privileges and remove unnecessary admin accounts.
- Require strong authentication for Cisco ISE administrative access.
- Monitor ISE admin activity for suspicious page or configuration changes.
Validation and detection
- Inventory Cisco ISE deployments and exposed management interfaces.
- Compare installed ISE versions against Cisco’s advisory.
- Confirm administrative access is limited to authorized users.
- Review ISE and identity logs for unusual admin activity.
- Check vulnerability management tools for CVE-2020-26083 detection coverage.
- Validate remediation in a non-production or approved maintenance window.
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-2020-26083 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
- 20201104 Cisco Identity Services Engine 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.