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Secure Firewall Management CenterApplication · Cisco

CVE-2024-20264

MEDIUM · 5.4 CVSS v3.1 Published 2024-10-23
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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 · unedited
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface of an affected device. This vulnerability is due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit this vulnerability by inserting crafted input into various data fields in an affected interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the 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 confidence

This is a stored cross-site scripting (XSS) vulnerability in Cisco Firepower Management Center's web-based management interface. An authenticated attacker can inject malicious JavaScript code into various data fields due to insufficient input validation. Successful exploitation allows the attacker to execute arbitrary script in the context of the victim's browser session or access sensitive browser-based information.

MitigationApply the vendor-supplied security patches for Cisco FMC Software. Until patches are applied, limit administrative access to the interface and monitor for unusual activity.

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
Secure Firewall Management CenterApplication
Affected:all versions= 7.1.0= 7.1.0.1= 7.1.0.2= 7.1.0.3= 7.2.0= 7.2.0.1= 7.2.1= 7.2.2= 7.2.3= 7.2.3.1= 7.2.4

CVSS 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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Cisco FMC presence
    Access the web-based management interface URL (typically https://<FMC-hostname>/) and verify the Cisco Firepower logo and login page appears. Alternatively, check network inventory for devices running Cisco Firepower Management Center software.
    Affected if The system is running Cisco Firepower Management Center web interface and the version is not known to be fixed.
  2. Check FMC software version
    Log into the Cisco FMC web interface and navigate to System > About > Updates, or use the CLI command 'show version' on the FMC appliance. Record the software version number displayed.
    Affected if The installed version matches any of these affected versions: 7.1.0, 7.1.0.1, 7.1.0.2, 7.1.0.3, 7.2.0, 7.2.0.1, 7.2.1, 7.2.2, 7.2.3, 7.2.3.1, or 7.2.4.
  3. Verify web interface accessibility
    Confirm the FMC web management interface is reachable from network locations. Check firewall rules, access policies, and interface configurations to determine if the interface is exposed to users beyond the local console.
    Affected if The web-based management interface is accessible over the network (not restricted to localhost or console-only access) on versions 7.1.0 through 7.2.4.
  4. Inspect for stored XSS in data fields
    As an administrator, review the following web interface sections where data input occurs: Device > Device Management (device names, descriptions), Object Manager (custom objects), Policies > Access Control (rule names, comments), and System > Users (user profile fields). Look for any unexpected script tags, JavaScript event handlers, or suspicious encoded characters in existing records.
    Affected if Any data field in these management sections contains unescaped HTML script tags or JavaScript code that could execute in a browser.

A user is affected if Cisco Firepower Management Center is running any version from 7.1.0 through 7.2.4 and its web-based management interface is accessible to authenticated users who can input data into the affected fields.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor-supplied security patches for Cisco FMC Software. Until patches are applied, limit administrative access to the interface and monitor for unusual activity.

Fix this in Secure Firewall Management Center Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,160
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-20264 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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
  • No spam, self-promotion, credentials, or personal data