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Bravia SignageApplication · Sony

CVE-2020-36923

CRITICAL · 9.8 CVSS v3.1 Published 2026-01-06
Fix available
A fix is available. Upgrade to after 1.7.8 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit 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
Sony BRAVIA Digital Signage 1.7.8 contains an insecure direct object reference vulnerability that allows attackers to bypass authorization controls. Attackers can access hidden system resources like '/#/content-creation' by manipulating client-side access restrictions.

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

Sony BRAVIA Digital Signage 1.7.8 has an Insecure Direct Object Reference (IDOR) vulnerability where the application relies on client-side JavaScript checks to enforce access controls. Attackers can bypass these client-side restrictions by directly navigating to protected URLs like '/#/content-creation', gaining unauthorized access to hidden system resources without proper server-side authorization validation.

MitigationImplement server-side authorization checks for all protected resources and endpoints. Remove reliance on client-side access restrictions; every API call and page access must validate user permissions at the server before returning data or rendering content.

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
Bravia SignageApplication
Affected:<= 1.7.8

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
High

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

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 version of Sony BRAVIA Digital Signage
    Access the administration interface or check system information within the application to determine the current software version. Compare this version against the affected range: <= 1.7.8
    Affected if The installed version is 1.7.8 or any earlier version
  2. Locate client-side access control logic
    Examine the JavaScript files loaded by the application interface. Look for access control enforcement logic that runs in the browser rather than being validated server-side
    Affected if Access control logic is implemented solely in client-side JavaScript without server-side verification
  3. Test direct URL access to protected endpoints
    Attempt to directly navigate to protected URLs such as '/#/content-creation' or other administrative endpoints without authenticating or with a low-privilege account. Observe whether access is granted without proper server-side authorization validation
    Affected if Direct navigation to protected URLs succeeds without server-side permission checks
  4. Verify server-side authorization for sensitive resources
    Intercept API requests to protected endpoints using browser developer tools or a proxy. Check if the server validates user permissions before returning sensitive data or allowing access to administrative functions
    Affected if The server returns protected content without validating authorization credentials server-side

A user is affected if running Sony BRAVIA Digital Signage version 1.7.8 or lower AND the application grants access to protected URLs like '/#/content-creation' through client-side checks alone without server-side authorization validation.

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 a release after 1.7.8
Interim mitigation

Implement server-side authorization checks for all protected resources and endpoints. Remove reliance on client-side access restrictions; every API call and page access must validate user permissions at the server before returning data or rendering content.

Recommended fix Moderate confidence

Any version above 1.7.8 (contact Sony for the specific fixed release)

  1. 1. Identify the current Bravia Signage version installed by accessing the device settings or admin interface.
  2. 2. Contact Sony professional support (pro-bravia.sony.net or pro.sony) to request the latest security update for Bravia Signage.
  3. 3. Request confirmation that the specific CVE-2020-36923 IDOR vulnerability is addressed in the available update.
  4. 4. Before applying the update, perform a full backup of the current configuration and content.
  5. 5. Apply the vendor-provided security update following Sony's official installation procedures.
  6. 6. After updating, verify that the '/#/content-creation' and other sensitive endpoints are properly protected by server-side authorization checks.
  7. 7. Confirm the update has been applied successfully by checking the software version in the system settings.
Caveat Ensure compatibility with existing content and integrations after upgrade; review release notes for any configuration changes

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

Fix this in Bravia Signage Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
25.0 hours of engineering $4,400
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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-2020-36923 in production — separate from our analysis above.

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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