CVE-2023-41566Public exploitNetwork attack vector

Authenticated file disclosure via backslash traversal

Published Jul 17, 2025 · Updated Jul 24, 2025

Path traversal in OA EKP 16 allows remote authenticated users to download arbitrary server files through the sysUiExtend.do endpoint. SysUiExtendAction blocks ../ in the id parameter but accepts Windows backslash traversal sequences, then packages the chosen path as a tarball. A valid session is required, and exploitation can expose the background administrator password and lead to database permissions without interrupting service.

CVSS severity8.1
High
EPSS probability0.29%
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 OA EKP 16 allows remote authenticated users to download arbitrary server files through the sysUiExtend.do endpoint. SysUiExtendAction blocks ../ in the id parameter but accepts Windows backslash traversal sequences, then packages the chosen path as a tarball. A valid session is required, and exploitation can expose the background administrator password and lead to database permissions without interrupting service.

The record

CVE
CVE-2023-41566
Published
Jul 17, 2025
Updated
Jul 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-552, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties
T1005Data from Local System

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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