Security readout for executives and security teams
Plain-English summary
Bosch Smart Home Controllers before version 9.8.905 could allow an already paired app or service to read or change controller configuration and trigger or restore backups. Exploitation requires successful pairing, which requires user interaction, so this is not described as unauthenticated internet-scale compromise in the provided sources.
Executive priority
Prioritize remediation for homes, offices, or managed environments where SHC controls sensitive physical security, safety, or automation functions. The issue is high severity but constrained by pairing requirements.
Technical view
CVE-2019-11892 is CWE-284 improper access control in the SHC JSON-RPC interface. The CVSS 3.0 score is 7.5 high with adjacent attack vector and high complexity. Impact is high for confidentiality, integrity, and availability because configuration and backup operations may be accessed improperly.
Likely exposure
Exposure is limited to Bosch Smart Home Controller deployments running versions before 9.8.905, especially where untrusted, old, or unnecessary apps or services remain paired with the controller.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. The described prerequisite is a successfully paired app or service, and pairing requires user interaction.
Researcher notes
Do not assume remote unauthenticated exploitation from the provided data. Validation should focus on firmware version, pairing state, JSON-RPC access control expectations, and whether configuration or backup actions are reachable by paired integrations.
Mitigation direction
- Upgrade Bosch Smart Home Controller firmware to 9.8.905 or later where applicable.
- Review Bosch PSIRT advisory BOSCH-SA-662084 for vendor-specific remediation guidance.
- Remove unknown, unused, or untrusted paired apps and services from SHC deployments.
- Restrict physical and local network access to SHC pairing workflows.
Validation and detection
- Inventory Bosch Smart Home Controller devices and record firmware versions.
- Confirm no SHC remains below version 9.8.905.
- Review paired apps and services for unknown or unnecessary entries.
- Check change records for unexpected configuration or backup activity.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2019-11892 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 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H1.65.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.5HighVector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.bosch.com/Advisory/BOSCH-SA-662084.htmlCVE reference · x_refsource_CONFIRM
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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.