Security readout for executives and security teams
Plain-English summary
This issue affects Bosch Smart Home Controllers before 9.8.905. A party with a successfully paired app or service could abuse the controller's JSON-RPC interface to cause denial of service, disrupting the controller and connected sensors or actuators. The sources do not indicate active exploitation.
Executive priority
Treat as a moderate operational resilience issue. Prioritize environments where smart-home sensors or actuators support safety, facility operations, or executive residences, because the known impact is service disruption rather than compromise of confidentiality.
Technical view
CVE-2019-11895 is an improper access control issue in the Bosch Smart Home Controller JSON-RPC interface before version 9.8.905. The reported impact is availability only: denial of service of the SHC and connected devices. Exploitation requires a successfully paired app or service, and pairing requires user interaction.
Likely exposure
Exposure is most likely where Bosch Smart Home Controller devices run firmware earlier than 9.8.905 and have paired apps or services. Internet-wide exposure is not established by the provided sources.
Exploitation context
The CVE is not listed as KEV in the supplied bundle. The available description says exploitation requires an already paired app or service, which requires user interaction, and results in denial of service rather than data theft or code execution.
Researcher notes
Key constraints are important: affected version boundary is before 9.8.905, impact is availability, and the attacker must have a successfully paired app or service. The provided sources do not establish exploit availability, exploitation in the wild, or broader affected Bosch products.
Mitigation direction
- Update Bosch Smart Home Controller firmware to 9.8.905 or later, following Bosch guidance.
- Review paired apps and services; remove any untrusted or unnecessary pairings.
- Restrict controller access to trusted local networks and administration paths.
- Check Bosch PSIRT for any newer remediation or operational advice.
Validation and detection
- Inventory Bosch Smart Home Controller devices in use.
- Confirm each controller firmware version is not earlier than 9.8.905.
- Review current paired apps and services for trust and business need.
- Confirm monitoring can detect controller or actuator availability loss.
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
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ATT&CK lookup starting points
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CWE-284: Authorization and privilege behavior lookup
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Open ATT&CK lookupCVE-2019-11895 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/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:N/I:N/A:H1.63.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/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.