Security readout for executives and security teams
Plain-English summary
This flaw can let an attacker trick a user into linking the attacker’s Amazon Alexa account to the user’s Tuya account. If successful, the attacker may gain Alexa-mediated access to Tuya-connected devices, including sensitive home or physical security devices.
Executive priority
Treat this as high priority where Tuya controls cameras, locks, alarms, or access-sensitive devices. The risk is account linking abuse leading to potential remote device control, but available sources do not confirm active exploitation.
Technical view
The issue is a CSRF-like OAuth account-linking flaw in Tuya SDK 6.5.0 for Android and iOS. The applications fail to validate the OAuth state parameter, allowing a crafted authorization link to complete account linking on the victim’s behalf after user interaction.
Likely exposure
Exposure applies to Tuya Smart, Smartlife, and third-party mobile applications integrating Tuya SDK 6.5.0, according to the CVE description. The source bundle does not provide complete CPEs, affected version ranges, or fixed versions.
Exploitation context
The CVE is not listed as KEV in the source bundle. Exploitation requires tricking a victim into clicking a crafted authorization link, but does not require prior Alexa linkage or the Tuya app to be active.
Researcher notes
The core weakness is missing OAuth state validation, mapped to CWE-352 and CWE-384. Public metadata gives a CVSS 3.1 score of 8.8. Evidence is incomplete on exact affected package identifiers, patched versions, and vendor mitigation details.
Mitigation direction
- Review Tuya advisory for official remediation and fixed SDK guidance.
- Inventory mobile apps using Tuya SDK 6.5.0 on Android or iOS.
- Update affected Tuya SDK integrations when vendor-fixed versions are available.
- Ask users to review and remove unexpected Alexa account links.
- Monitor Tuya, Smartlife, and third-party app updates for security fixes.
Validation and detection
- Confirm whether products integrate Tuya SDK 6.5.0.
- Review OAuth account-linking flow for strict state parameter validation.
- Check user accounts for unexpected Alexa linkage.
- Verify apps reject mismatched or missing OAuth state values.
- Track CVE and Tuya announcement updates for corrected affected-version data.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCWE-384: 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-2025-56400 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
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.
SSVC decision data
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:R/S:U/C:H/I:H/A:H2.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://src.tuya.com/announcement/30CVE reference, mitre
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.