CVE-2020-36897: QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated remote code execution vulnerability in the

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-36897 is a critical-severity flaw (CVSS 9.8) affecting qihang media web digital signage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-434
Published	2025-12-10
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: howfor

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-10 21:16 UTCPublished CVE record published
2026-06-17 03:16 UTCUpdated Record last modified

howfor qihang media web digital signage DOWNGRADE

Affected: 3.0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.9

1. Check installed version

apt-cache policy qihang-media-web-digital-signage || rpm -q qihang-media-web-digital-signage || qihang-media-web-digital-signage --version

2. No fixed release: DOWNGRADE to a release before 3.0.9 (Debian / Ubuntu)

apt-cache madison qihang-media-web-digital-signage sudo apt install qihang-media-web-digital-signage=<VERSION_BEFORE_3.0.9> sudo apt-mark hold qihang-media-web-digital-signage

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list qihang-media-web-digital-signage sudo dnf downgrade qihang-media-web-digital-signage-<VERSION_BEFORE_3.0.9> sudo dnf versionlock add qihang-media-web-digital-signage

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · legofy · FIXED · 1.0.0-43.20261028git6913585.fc46 · FEDORA-2026-e1e60e1e32 · source

sudo dnf upgrade --advisory=FEDORA-2026-e1e60e1e32

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: www.exploit-db.com/exploits/48751
Write-up: www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5582.php

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-36897?

qihang media web digital signage: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-36897 being exploited?

CVE-2020-36897 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-36897 affect?

CVE-2020-36897 affects qihang media web digital signage. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2020-36897?

Priority 65/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-36899 HIGH 7.5 DOWNGRADE QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated file disclosure vulnerability that allows r
CVE-2020-36898 CRITICAL 9.1 DOWNGRADE QiHang Media Web Digital Signage 3.0.9 contains an unauthenticated file deletion vulnerability in the QH.aspx
CVE-2020-36896 HIGH 7.5 DOWNGRADE QiHang Media Web Digital Signage 3.0.9 contains a cleartext credentials vulnerability that allows unauthentica

References

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