Security readout for executives and security teams
Plain-English summary
Samsung SmartThings versions before 1.7.67.25 had an access control flaw that let an untrusted application cause SmartThings to load arbitrary webpages in a WebView. The public sources do not provide CVSS scoring, exploitation evidence, or detailed impact, so urgency should be based on whether the app is deployed or managed in your mobile fleet.
Executive priority
Handle as a targeted mobile application hygiene issue, not an emergency based on current evidence. Prioritize remediation if SmartThings is present on managed or sensitive-user devices. The lack of CVSS and exploit evidence lowers confidence in business impact, but the fixed version is clear.
Technical view
CVE-2021-25446 is a CWE-284 improper access control issue in Samsung Mobile Smart Things before version 1.7.67.25. The described behavior allows untrusted applications to trigger arbitrary webpage loading inside the SmartThings WebView. Public details are sparse and do not describe privilege requirements, user interaction, or post-load impact.
Likely exposure
Exposure is limited to users or managed devices running Samsung SmartThings before 1.7.67.25. Organizations with mobile device management, corporate Android fleets, or SmartThings use in facilities should verify installed versions. The source bundle does not identify other affected Samsung products.
Exploitation context
The source bundle says KEV is false and provides no cited evidence of active exploitation. The issue may require an untrusted application on the same device, but the public record does not fully document attack prerequisites or impact. Do not assume internet-wide exploitability from the available evidence.
Researcher notes
Public information is limited to the affected app, fixed-version boundary, CWE-284 classification, and WebView arbitrary webpage-loading behavior. No CVSS vector, proof-of-concept status, exploit chain, or detailed impact is included in the provided sources. Further analysis should start with Samsung’s advisory and version validation.
Mitigation direction
- Update Samsung SmartThings to version 1.7.67.25 or later.
- Check Samsung’s August 2021 mobile security advisory for vendor guidance.
- Use MDM controls to remove or update vulnerable SmartThings installations.
- Restrict installation of untrusted mobile applications where enterprise policy allows.
Validation and detection
- Inventory Samsung SmartThings installations across managed mobile devices.
- Confirm installed SmartThings versions are 1.7.67.25 or later.
- Review MDM app reports for unmanaged or outdated SmartThings copies.
- Check vulnerability records for any newer vendor clarification before closure.
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-2021-25446 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://security.samsungmobile.com/serviceWeb.smsb?year=2021&month=8CVE reference · x_refsource_MISC
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.