CVE-2020-5581Network attack vector

Authenticated file disclosure via portal path traversal

Published Jun 30, 2020 · Updated Aug 4, 2024

Path traversal in Cybozu Garoon 4.0.0 through 5.0.1 allows remote authenticated attackers to read unintended files. The portal's portlet functionality resolves a crafted pathname outside its intended directory, exposing files. Login with basic component privileges is required; impact is information disclosure without reported integrity or availability effects.

CVSS severity7.7
High
EPSS probability1.80%
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 Cybozu Garoon 4.0.0 through 5.0.1 allows remote authenticated attackers to read unintended files. The portal's portlet functionality resolves a crafted pathname outside its intended directory, exposing files. Login with basic component privileges is required; impact is information disclosure without reported integrity or availability effects.

The record

CVE
CVE-2020-5581
Published
Jun 30, 2020
Updated
Aug 4, 2024
Vendor
Cybozu
Product
Garoon
Classifications
CWE-22, T1083
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=4.0.0 to 5.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cybozu · Garoonversion=4.0.0 to 5.0.1

Published CVSS scores

7.7JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
5.0JPCERT/CCAV:N/AC:L/Au:N/C:P/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1083Path and Directory Discovery

Public exploit references

No public exploit references are available in this record.

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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