What is the CVSS score of CVE-2025-29660?

CVE-2025-29660 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.7%.

Which versions of Xy 3820 Firmware are affected by CVE-2025-29660?

Organizations using the daemon process of the Yi IOT XY-3820 face critical risk from CVE-2025-29660, a path traversal vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-29660?

Yes, a public proof-of-concept exploit is available for CVE-2025-29660. Prioritise patching immediately. EPSS: 0.7%.

How to fix or mitigate CVE-2025-29660?

Within 24 hours: Identify all affected systems running the daemon process of the Yi IOT XY-3820 and apply vendor patches immediately. Review file handling controls and restrict upload directories.

Xy 3820 Firmware CVE-2025-29660

CRITICAL

Path Traversal (CWE-22)

2025-04-21 cve@mitre.org

Path Traversal Xy 3820 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

PoC Detected

Jun 23, 2025 - 13:40 vuln.today

Public exploit code

CVE Published

Apr 21, 2025 - 15:16 nvd

CRITICAL 9.8

DescriptionCVE.org

A vulnerability exists in the daemon process of the Yi IOT XY-3820 v6.0.24.10, which exposes a TCP service on port 6789. This service lacks proper input validation, allowing attackers to execute arbitrary scripts present on the device by sending specially crafted TCP requests using directory traversal techniques.

AnalysisAI

A vulnerability exists in the daemon process of the Yi IOT XY-3820 v6.0.24.10, which exposes a TCP service on port 6789. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. A vulnerability exists in the daemon process of the Yi IOT XY-3820 v6.0.24.10, which exposes a TCP service on port 6789. This service lacks proper input validation, allowing attackers to execute arbitrary scripts present on the device by sending specially crafted TCP requests using directory traversal techniques. Affected products include: Yiiot Xy-3820 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.