KDDI HGW-BL1500HM up to 002.002.003 USB Storage File-Sharing path traversal

Summaryinfo

A vulnerability labeled as critical has been found in KDDI HGW-BL1500HM up to 002.002.003. This affects an unknown part of the component USB Storage File-Sharing. Executing a manipulation can lead to path traversal. The identification of this vulnerability is CVE-2025-27932. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in KDDI HGW-BL1500HM up to 002.002.003 and classified as critical. This vulnerability affects an unknown part of the component USB Storage File-Sharing. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect integrity, and availability. CVE summarizes:

Improper limitation of a pathname to a restricted directory ('Path Traversal') issue exists in the file deletion process of the USB storage file-sharing function of HGW-BL1500HM Ver 002.002.003 and earlier. If this vulnerability is exploited, an attacker may delete a file on the device or cause a denial of service (DoS) condition.

The advisory is shared for download at kddi-tech.com. This vulnerability was named CVE-2025-27932 since 03/11/2025. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• KDDI

Name

• HGW-BL1500HM

Version

• 002.002.003

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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