SB2025031930 - Multiple vulnerabilities in KDDI HGW-BL1500HM



SB2025031930 - Multiple vulnerabilities in KDDI HGW-BL1500HM

Published: March 19, 2025

Security Bulletin ID SB2025031930
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Stored cross-site scripting (CVE-ID: CVE-2025-27567)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the NickName registration screen. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


2) Stored cross-site scripting (CVE-ID: CVE-2025-27574)

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the USB storage file-sharing function. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


3) Path traversal (CVE-ID: CVE-2025-27716)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the file/folder listing process of the USB storage file-sharing function. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.


4) Path traversal (CVE-ID: CVE-2025-27718)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the file upload process of the USB storage file-sharing function. A remote user can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary code execution.


5) Path traversal (CVE-ID: CVE-2025-27726)

The vulnerability allows a local attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the file download process of the USB storage file-sharing function. An authenticated attacker with physical access can send a specially crafted HTTP request and read arbitrary files on the system.


6) Path traversal (CVE-ID: CVE-2025-27932)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the file deletion process of the USB storage file-sharing function. A remote user can send a specially crafted HTTP request and delete arbitrary files on the system, leading to denial of service (DoS) condition.


Remediation

Install update from vendor's website.