CVE-2020-36899Public exploitNetwork attack vector

Unauthenticated file disclosure via unchecked QH.aspx paths

Published Dec 10, 2025 · Updated Dec 10, 2025

Path traversal in QiHang Media Web Digital Signage 3.0.9 allows remote attackers to read server files through the QH.aspx endpoint. The download and getAll actions pass unverified filename and path values to local file and directory retrieval operations. No authentication is required; crafted relative paths expose application source, configuration files, and directory listings, without reported write access.

CVSS severity8.7
High
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in QiHang Media Web Digital Signage 3.0.9 allows remote attackers to read server files through the QH.aspx endpoint. The download and getAll actions pass unverified filename and path values to local file and directory retrieval operations. No authentication is required; crafted relative paths expose application source, configuration files, and directory listings, without reported write access.

The record

CVE
CVE-2020-36899
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
Guangzhou Hefeng Automation Technology Co., Ltd.
Product
QiHang Media Web Digital Signage
Classifications
CWE-530, T1005, T1083
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Guangzhou Hefeng Automation Technology Co., Ltd. · QiHang Media Web Digital Signageversion=3.0.9.0

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-530Exposure of Backup File to an Unauthorized Control Sphere
T1005Data from Local System
T1083File and Directory Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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