Secure Firewall Threat DefenseApplication · Cisco
CVE-2020-3352
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 CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to access hidden commands. The vulnerability is due to the presence of undocumented configuration commands. An attacker could exploit this vulnerability by performing specific steps that make the hidden commands accessible. A successful exploit could allow the attacker to make configuration changes to various sections of an affected device that should not be exposed to CLI access.
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 vulnerability in the Cisco Firepower Threat Defense (FTD) CLI allows authenticated local attackers to access hidden, undocumented configuration commands that should not be exposed. Successful exploitation permits unauthorized configuration changes to device sections normally restricted from CLI access.
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 Threat DefenseApplication
< 6.3.0.6>= 6.4.0, < 6.4.0.10>= 6.5.0, < 6.5.0.5>= 6.6.0, < 6.6.1CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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 the installed FTD versionLog into the FTD CLI and run the command 'show version' or 'show running-config | include version' to display the installed software versionAffected if The displayed version falls within these ranges: < 6.3.0.6, >= 6.4.0 but < 6.4.0.10, >= 6.5.0 but < 6.5.0.5, or >= 6.6.0 but < 6.6.1
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Verify CLI user access controlsReview the FTD configuration for CLI user accounts and privilege levels using 'show running-config all | include user' or 'show privilege' commandsAffected if There are local user accounts with elevated privileges that could access undocumented commands, or privilege escalation has occurred
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Inspect CLI access logs for exploitation indicatorsCheck system logs using 'show log' or 'show logging buffered' for entries indicating access to hidden configuration modes, failed authentication attempts, or unexpected configuration changesAffected if Logs contain entries referencing unknown commands, access to restricted configuration modes, or configuration changes not initiated by authorized administrators
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Compare current configuration against known baselineReview the running configuration using 'show running-config' and compare against a documented baseline or backup for unauthorized changes to device settings, particularly in restricted configuration sectionsAffected if Configuration contains changes to settings that should not be modifiable through standard CLI, or differ from the known good baseline without documented justification
The environment is affected if the FTD version is in the vulnerable range AND there is evidence of unauthorized access to hidden CLI commands or configuration changes not initiated by authorized administrators.
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 data6.3.0.66.4.0.106.5.0.5
Apply Cisco's official patch for CVE-2020-3352 when available, or disable undocumented commands if identified; review CLI access logs for signs of exploitation.
Fix this in Secure Firewall Threat Defense
Scoped from the published advisory
- Consultation3.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3352 — 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-2020-3352 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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