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CVE-2025-21623

Oxygenz Clipbucket authentication bypass

7.5 HIGHPublic exploitEPSS 1.13%
  1. Published7 Jan 2025

Description

ClipBucket V5 provides open source video hosting with PHP. Prior to 5.5.1 - 238, ClipBucket V5 allows unauthenticated attackers to change the template directory via a directory traversal, which results in a denial of service.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Oxygenz Clipbucket≥ 5.3 < 5.5.1-238

Remediation

Fixed in
Oxygenz Clipbucket≥ 5.5.1-238

References

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Frequently asked

Is CVE-2025-21623 being actively exploited?

CVE-2025-21623 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.13%.

How severe is CVE-2025-21623?

CVE-2025-21623 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.13% probability of exploitation.

Which products are affected by CVE-2025-21623?

Affected products include Oxygenz Clipbucket.

How do I fix CVE-2025-21623?

Upgrade affected software to a fixed version, for example Oxygenz Clipbucket 5.5.1-238 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-21623 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.