CVE-2025-29659
Published: 21 April 2025
Summary
CVE-2025-29659 is a critical-severity Improper Authorization (CWE-285) vulnerability in Yiiot Xy-3820 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation of Remote Services (T1210); ranked in the top 19.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Yi IOT XY-3820 version 6.0.24.10 contains a remote command execution vulnerability in the cmd binary, specifically within the cmd_listen function. The flaw is tracked as CVE-2025-29659 with a CVSS 3.1 score of 9.8 and is associated with CWE-285 improper authorization.
An unauthenticated attacker with network access can invoke the affected function to execute arbitrary commands on the device, resulting in full compromise of confidentiality, integrity, and availability without requiring user interaction.
Public exploit code and detailed vulnerability research for this issue have been published on GitHub. The EPSS score rose from a low baseline to a peak of 0.0422, indicating emerging exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-12376
Vulnerability details
Yi IOT XY-3820 6.0.24.10 is vulnerable to Remote Command Execution via the "cmd_listen" function located in the "cmd" binary.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote command execution vulnerability in the cmd_listen function of the cmd binary on Yi IOT XY-3820 enables exploitation of remote services.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Documented procedures facilitate correct implementation and ongoing management of authorization decisions.
Periodic reviews identify and correct flaws in authorization decisions or enforcement.
The control's documentation requirement reduces improper authorization by ensuring only mission-justified actions bypass authentication.
Establishing permitted attributes and values, plus auditing changes, ensures authorization decisions are based on correctly managed policy data.
Explicitly mandates authorizing remote access types before permitting connections, directly mitigating improper authorization.
The control explicitly requires authorization of each wireless access type prior to permitting connections.
Mandating explicit authorization of mobile device connections reduces the risk of improper authorization decisions for system access.
Specifying access authorizations for each account and requiring approvals for account requests enforces proper authorization decisions.