How severe is CVE-2025-21623?

CVE-2025-21623 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-21623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21623?

CVE-2025-21623 affects Oxygenz Clipbucket. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-21623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-21623 have an EU (EUVD) identifier?

Yes. CVE-2025-21623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2575.

When was CVE-2025-21623 published?

CVE-2025-21623 was published on 2025-01-07 and last updated on 2026-06-17.

CVE-2025-21623

CVE-2025-21623 is a high-severity vulnerability in Oxygenz Clipbucket with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2575
Weakness: CWE-22
Affected product: Oxygenz Clipbucket
Published: 2025-01-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-21623?: 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.
How severe is CVE-2025-21623?: CVE-2025-21623 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-21623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21623?: CVE-2025-21623 affects Oxygenz Clipbucket. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-21623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-21623 have an EU (EUVD) identifier?: Yes. CVE-2025-21623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2575.
When was CVE-2025-21623 published?: CVE-2025-21623 was published on 2025-01-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oxygenz:clipbucket:*:*:*:*:*:*:*:*

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