CVE-2021-25809Public exploitNetwork attack vector

Unauthenticated path disclosure via undefined function error

Published Jul 23, 2021 · Updated Aug 3, 2024

Information disclosure in UCMS 1.5.0 allows remote attackers to read the server's physical path by requesting ucms/top.php directly. top.php calls the undefined adminchannelscache() function at line 2, and PHP returns the resulting error with the current filesystem path. No authentication is required; the disclosed path aids follow-on targeting but does not expose file contents.

CVSS severity5.3
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in UCMS 1.5.0 allows remote attackers to read the server's physical path by requesting ucms/top.php directly. top.php calls the undefined adminchannelscache() function at line 2, and PHP returns the resulting error with the current filesystem path. No authentication is required; the disclosed path aids follow-on targeting but does not expose file contents.

The record

CVE
CVE-2021-25809
Published
Jul 23, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-209
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information

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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