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DeceptionApplication · Fidelissecurity

CVE-2021-35049

HIGH · 8.8 CVSS v3.1 Published 2021-06-25
Fix available
A fix is available. Upgrade to 9.3.7 or later.
See remediation →
94/100
Remediation priority · Urgent
Public exploit Remotely reachable Zero-click

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
Vulnerability in Fidelis Network and Deception CommandPost enables authenticated command injection through the web interface. The vulnerability could allow a specially crafted HTTP request to execute system commands on the CommandPost and return results in an HTTP response in an authenticated session. The vulnerability is present in Fidelis Network and Deception versions prior to 9.3.7 and in version 9.4. Patches and updates are available to address this vulnerability.

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
How this class of weakness works · CWE-89

User input is woven into a database query, letting an attacker rewrite the query's logic. From there they can read, alter, or destroy data — frequently the entire database. The reliable fix is parameterised queries (prepared statements), so input is always treated as data and never as SQL.

General guidance for the sql injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
DeceptionApplication
Affected:< 9.3.7= 9.4
NetworkApplication
Affected:< 9.3.7= 9.4

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 · scoped
Upgrade available Upgrade to 9.3.7 or later
Fixed in 9.3.7
Recommended fix High confidence

9.3.7 or later

  1. Obtain the patched version (9.3.7 or later) from the official Fidelis Security support portal at support.fidelissecurity.com
  2. Review the official upgrade documentation for your product (Fidelis Network or Deception CommandPost)
  3. Create a complete backup of the current system configuration
  4. Follow the vendor's recommended upgrade procedure to update to version 9.3.7 or later
  5. After upgrade, verify the system is functioning correctly and the vulnerability is resolved

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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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-2021-35049 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