Update ServerApplication · Bitdefender

CVE-2020-15297

CRITICAL · 9.1 CVSS v3.1 Published 2020-11-09
Fix available
A fix is available. Upgrade to 6.6.20.294 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
Insufficient validation in the Bitdefender Update Server and BEST Relay components of Bitdefender Endpoint Security Tools versions prior to 6.6.20.294 allows an unprivileged attacker to bypass the in-place mitigations and interact with hosts on the network. This issue affects: Bitdefender Update Server versions prior to 6.6.20.294.

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 · moderate confidence

Insufficient validation in the Bitdefender Update Server and BEST Relay components of Bitdefender Endpoint Security Tools allows unprivileged attackers to bypass in-place security mitigations and interact with hosts on the network, enabling potential lateral movement.

MitigationUpgrade Bitdefender Endpoint Security Tools to version 6.6.20.294 or later to remediate the insufficient validation vulnerability in the Update Server and BEST Relay components.

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
Update ServerApplication
Affected:< 6.6.20.294

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

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

  1. Identify installed Bitdefender Endpoint Security Tools version
    Locate the Bitdefender Endpoint Security Tools installation and retrieve the product version information. This can typically be found in the program's properties, the installed software list, or by running the product's version check command if available.
    Affected if The installed version is lower than 6.6.20.294 (for example, 6.5.x, 6.6.0 through 6.6.20.293, or any earlier major version).
  2. Determine if the Update Server component is enabled
    Check whether the Bitdefender Update Server component is configured or running within the Bitdefender Endpoint Security Tools installation. This component is typically managed through the product's administrative console or configuration settings.
    Affected if The Update Server component is present and enabled on the system, and the product version is below 6.6.20.294.
  3. Determine if the BEST Relay component is enabled
    Check whether the BEST Relay component is configured or running within the Bitdefender Endpoint Security Tools installation. This component is typically managed through the product's administrative console or configuration settings.
    Affected if The BEST Relay component is present and enabled on the system, and the product version is below 6.6.20.294.
  4. Verify component version if available
    If the Update Server or BEST Relay components have their own version information, retrieve and compare it against the affected range.
    Affected if Any Update Server or BEST Relay component version is below the fixed version associated with 6.6.20.294.

The environment is affected if Bitdefender Endpoint Security Tools version is lower than 6.6.20.294 and either the Update Server or BEST Relay component is enabled.

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.

dbcve · scoped
Upgrade available Upgrade to 6.6.20.294 or later
Fixed in 6.6.20.294
Interim mitigation

Upgrade Bitdefender Endpoint Security Tools to version 6.6.20.294 or later to remediate the insufficient validation vulnerability in the Update Server and BEST Relay components.

Recommended fix High confidence

6.6.20.294

  1. Identify the current version of Bitdefender Endpoint Security Tools installed on affected systems
  2. Obtain the updated version 6.6.20.294 or later from official Bitdefender distribution channels referenced at www.bitdefender.com
  3. Apply the update to the Bitdefender Update Server component using Bitdefender's standard update deployment procedures
  4. Verify that the Update Server has been successfully upgraded to version 6.6.20.294 or later
  5. Confirm that the BEST Relay components are also updated to the fixed version

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

Fix this in Update Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing12.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,760
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,616.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2020-15297 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-15297 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