Secure Firewall Management CenterApplication · Cisco
CVE-2022-20941
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 Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. This vulnerability is due to missing authorization for certain resources in the web-based management interface together with insufficient entropy in these resource names. An attacker could exploit this vulnerability by sending a series of HTTPS requests to an affected device to enumerate resources on the device. A successful exploit could allow the attacker to retrieve sensitive information from the device.
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 confidenceThe vulnerability in Cisco FMC web-based management interface lacks proper authorization checks on certain resources combined with predictable resource names due to insufficient entropy. An unauthenticated remote attacker can send HTTPS requests to enumerate and access sensitive information on the device.
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
= 6.1.0= 6.1.0.1= 6.1.0.2= 6.1.0.3= 6.1.0.4= 6.1.0.5= 6.1.0.6= 6.1.0.7= 6.2.0= 6.2.0.1= 6.2.0.2= 6.2.0.3CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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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Identify Cisco FMC versionLog into the FMC device CLI and run 'show version' or check the web UI login page footer which displays the version numberAffected if Version displayed is 6.1.0, 6.1.0.1, 6.1.0.2, 6.1.0.3, 6.1.0.4, 6.1.0.5, 6.1.0.6, 6.1.0.7, 6.2.0, 6.2.0.1, 6.2.0.2, or 6.2.0.3
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Verify web management interface is enabledCheck if HTTPS port (default 443) is listening on the FMC management interface using 'show port' or 'netstat -an | grep 443'Affected if The web-based management interface is enabled and accepting HTTPS connections
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Determine if FMC is accessible from untrusted networksReview network firewall rules or ACLs protecting the FMC management interface to identify if HTTPS traffic from outside the trusted network is permittedAffected if The FMC web interface is reachable from networks outside the trusted administrative zone (such as the internet or untrusted internal subnets)
You are affected if your FMC runs any version from 6.1.0 through 6.2.0.3 AND the web-based management interface is accessible from untrusted networks, allowing unauthenticated attackers to potentially enumerate and access sensitive information.
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.
dbcve · scopedApply the relevant Cisco security patch when available, or implement network-level access controls to limit management interface exposure to trusted networks only.
Upgrade to Cisco FMC version 6.2.0 or later (6.2.x, 6.3.x, 6.4.x, or latest stable 6.x/7.x release)
- 1. Identify the current installed version of Cisco Firepower Management Center (FMC) by accessing the web-based management interface and navigating to the System > Updates page or using the CLI command 'show version'.
- 2. Schedule a maintenance window for the upgrade, ensuring adequate downtime is available for the update process.
- 3. Download the appropriate upgrade package from Cisco's software download center (software.cisco.com) for your hardware platform.
- 4. Back up the FMC configuration before proceeding with the upgrade.
- 5. Upload the upgrade package through the FMC web interface (System > Updates > Product Updates) or via CLI.
- 6. Initiate the upgrade and monitor the process until completion.
- 7. After the system reboots, verify the new version is installed by checking 'show version' in the CLI.
- 8. Validate that the web-based management interface is accessible and functioning correctly.
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Secure Firewall Management Center
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 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 $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20941 — 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-2022-20941 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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- Version or environment caveats, and links to real fixes
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