Security readout for executives and security teams
Plain-English summary
CVE-2020-36922 affects Sony BRAVIA Digital Signage 1.7.8. An unauthenticated network user can retrieve sensitive system information from exposed API endpoints. This is mainly a confidentiality risk: leaked network, configuration, and system metadata could help attackers plan further attacks against signage infrastructure or adjacent systems.
Executive priority
Treat as high priority for exposed signage environments. The vulnerability leaks sensitive infrastructure details without login, and public exploit references exist. If the software is not deployed or is isolated from untrusted networks, urgency is lower but inventory validation is still recommended.
Technical view
The reported issue is CWE-497 information disclosure in Sony BRAVIA Digital Signage 1.7.8. The CVSS 3.1 score is 7.5, driven by network access, low complexity, no privileges, no user interaction, and high confidentiality impact. Public exploit references exist, but the provided sources do not show CISA KEV listing or confirmed active exploitation.
Likely exposure
Organizations using Sony BRAVIA Digital Signage 1.7.8 are the likely exposure group. Risk is highest where signage management interfaces or system APIs are reachable from untrusted networks or the internet. Internal-only deployments still carry risk if guest, contractor, or compromised internal systems can reach the API.
Exploitation context
The public sources include exploit-database style entries and third-party advisories, indicating public technical knowledge exists. However, the bundle does not support a claim of active exploitation. The issue does not require authentication, which increases practical risk when the affected API is network-accessible.
Researcher notes
The source bundle names version 1.7.8, while the affected entry lists version “0,” so affected-version metadata appears incomplete or inconsistent. No vendor patch details are provided in the bundle. Avoid assuming remediation beyond checking Sony resources, reducing exposure, and isolating affected systems.
Mitigation direction
- Check Sony BRAVIA Signage resources and vendor guidance for supported updates or replacement paths.
- Remove signage management APIs from internet exposure.
- Restrict API access to trusted administrative networks only.
- Place signage systems on segmented networks with limited lateral access.
- Monitor for unusual requests to signage system API endpoints.
- Retire unsupported or unmanaged signage software where updates are unavailable.
Validation and detection
- Inventory Sony BRAVIA Digital Signage deployments and identify software versions.
- Prioritize any instance running version 1.7.8.
- Confirm signage APIs are not reachable from the internet.
- Review firewall and segmentation rules around signage networks.
- Check logs for unauthenticated access attempts to system API paths.
- Compare installed software against Sony’s current published resources.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-497: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-36922 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-49187CVE reference · exploit
- Sony BRAVIA Digital Signage Official HomepageCVE reference · product
- BRAVIA Signage Software ResourcesCVE reference · product
- Sony Professional Display Software Product PageCVE reference · product
- Zero Science Lab Disclosure (ZSL-2020-5610)CVE reference · third-party-advisory
- Packet Storm Security Exploit EntryCVE reference · exploit
- CXSecurity Vulnerability DatabaseCVE reference · exploit
- IBM X-Force Vulnerability ExchangeCVE reference · vdb-entry
- VulnCheck Advisory: Sony BRAVIA Digital Signage 1.7.8 Unauthenticated System API Information DisclosureCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Exposure of Sensitive System Information to an Unauthorized Control Sphere
Exposure of Sensitive System Information to an Unauthorized Control Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.