CVE-2020-36898Public exploitNetwork attack vector

Unauthenticated file deletion via unsanitized path

Published Dec 10, 2025 · Updated Dec 10, 2025

Path traversal in QiHang Media Web Digital Signage 3.0.9 allows remote attackers to delete arbitrary server-accessible files. QH.aspx passes each path supplied in the POST data parameter to its delete action without sanitizing absolute paths or traversal sequences. No authentication is required, and deletion runs with the web server's permissions, allowing service data or application files to be removed.

CVSS severity9.1
Critical
EPSS probability1.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in QiHang Media Web Digital Signage 3.0.9 allows remote attackers to delete arbitrary server-accessible files. QH.aspx passes each path supplied in the POST data parameter to its delete action without sanitizing absolute paths or traversal sequences. No authentication is required, and deletion runs with the web server's permissions, allowing service data or application files to be removed.

The record

CVE
CVE-2020-36898
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
Guangzhou Hefeng Automation Technology Co., Ltd.
Product
QiHang Media Web Digital Signage
Classifications
CWE-22, T1485
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=3.0.9

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

Published CVSS scores

8.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo