CVE-2020-36893Public exploitNetwork attack vector

Unauthenticated file disclosure via oldfile path traversal

Published Dec 10, 2025 · Updated Dec 10, 2025

Path traversal in EIBIZ Digital Signage Server 3.8.0 and earlier allows remote attackers to read arbitrary server files. The /dlibrary/null handler resolves parent-directory sequences supplied through the oldfile GET parameter without confining the resolved path to the web root. Authentication and interaction are not required, and exposed data includes application configuration and Windows system files.

CVSS severity8.7
High
EPSS probability1.57%
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 EIBIZ Digital Signage Server 3.8.0 and earlier allows remote attackers to read arbitrary server files. The /dlibrary/null handler resolves parent-directory sequences supplied through the oldfile GET parameter without confining the resolved path to the web root. Authentication and interaction are not required, and exposed data includes application configuration and Windows system files.

The record

CVE
CVE-2020-36893
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
EIBIZ Co.,Ltd.
Product
i-Media Server Digital Signage
Classifications
CWE-22, T1005, T1190
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=0 <=3.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EIBIZ Co.,Ltd. · i-Media Server Digital Signageversion=0 <=3.8.0

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 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')
T1005Data from Local System
T1190Exploit Public-Facing Application

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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