Identity Services EngineApplication · Cisco
CVE-2024-20525
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA vulnerability in the web-based management interface of Cisco ISE could allow an unauthenticated, remote attacker to conduct an XSS attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA reflected Cross-Site Scripting (XSS) vulnerability in Cisco ISE's web-based management interface allows unauthenticated remote attackers to inject malicious scripts via crafted URLs. The interface fails to properly sanitize user-supplied input, enabling script execution in the victim's browser context when they click a malicious link.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Identity Services EngineApplication
= 3.0.0= 3.1.0= 3.2.0= 3.3.0= 3.4.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify Cisco ISE management interface is accessibleCheck if TCP ports 443, 8443, or the configured management ports are open and reachable for the ISE web UIAffected if The management interface is externally or internally accessible to potential attackers
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Identify installed Cisco ISE version via web interfaceLog into the Cisco ISE administrative web UI and navigate to Administration > System > Settings > Product Version, or check the login page footer for version informationAffected if Version displayed matches 3.0.0, 3.1.0, 3.2.0, 3.3.0, or 3.4.0 exactly
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Identify installed Cisco ISE version via CLISSH or console into the ISE node and run the command 'show version' or 'show application version ise'Affected if Version output shows 3.0.0, 3.1.0, 3.2.0, 3.3.0, or 3.4.0 exactly
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Confirm patch statusIn the ISE web UI, navigate to Administration > System > Maintenance > Patch Set or check Cisco ISE release notes for your specific version to see if a post-version patch has been appliedAffected if No security patch for CVE-2024-20525 has been installed on the affected version
Your environment is affected if Cisco ISE version 3.0.0, 3.1.0, 3.2.0, 3.3.0, or 3.4.0 is running AND the web-based management interface is accessible to users who could click malicious crafted URLs.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply the Cisco ISE security patch when available. Users should be warned not to click untrusted links. Consider network segmentation to limit exposure of the management interface.
Fix this in Identity Services Engine
Scoped from the published advisory
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,752.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-20525 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-20525 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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