CVE-2025-27718: Path Traversal (CVSS 8.8)

Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') issue exists in the file upload process of the USB storage file-sharing function of HGW-BL1500HM Ver 002.002.003 and earlier. If this vulnerability is exploited, the product's files may be obtained and/or altered or arbitrary code may be executed by a crafted HTTP request to specific functions of the product from a device connected to the LAN side.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-22 Path Traversal

References

Other References

https://jvn.jp/en/jp/JVN04278547/ https://kddi-tech.com/contents/appendix_L2_06.html#64433e4a-8946-9c06-bddf-91cbfe56c8e5

Frequently Asked Questions

What is CVE-2025-27718? +

Improper limitation of a pathname to a restricted directory ('Path Traversal') issue exists in the file upload process of the USB storage file-sharing function of HGW-BL1500HM Ver 002.002.003 and earlier. If this vulnerability is exploited, the product's files may be obtained and/or altered or arbitrary code may be executed by a crafted HTTP request to specific functions of the product from a device connected to the LAN side. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-27718? +

CVE-2025-27718 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2025-27718? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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