What is CVE-2025-27718?

CVE-2025-27718 is a high-severity vulnerability in Kddi Corporation Hgw-Bl1500hm, classified under Path Traversal. CVSS score: 8.8/10. Published 2025-03-28.

How severe is CVE-2025-27718?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2025-27718 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in Kddi Corporation Hgw-Bl1500hm

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.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.009 (55.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Kddi Corporation Hgw-bl1500hm — versions Ver 002.002.003 and earlier

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-27718?: CVE-2025-27718 is a high-severity vulnerability in Kddi Corporation Hgw-Bl1500hm, classified under Path Traversal. CVSS score: 8.8/10. Published 2025-03-28.
How severe is CVE-2025-27718?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-27718 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.