How severe is CVE-2016-20075?

CVE-2016-20075 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-20075 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2016-20075?

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-2016-20075 have an EU (EUVD) identifier?

Yes. CVE-2016-20075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10887.

When was CVE-2016-20075 published?

CVE-2016-20075 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2016-20075

CVE-2016-20075 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-863.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2016-10887
Weakness: CWE-863
Published: 2026-06-15
Last modified: 2026-06-17

Description

WordPress Ultimate Product Catalog 3.8.6 contains an arbitrary file upload vulnerability that allows authenticated users with contributor, editor, author, or administrator roles to upload malicious files by exploiting the custom fields functionality. Attackers can upload PHP shells through the Products tab custom file field and access them via the upcp-product-file-uploads directory to execute arbitrary code on the server.

Frequently asked questions

What is CVE-2016-20075?: WordPress Ultimate Product Catalog 3.8.6 contains an arbitrary file upload vulnerability that allows authenticated users with contributor, editor, author, or administrator roles to upload malicious files by exploiting the custom fields functionality. Attackers can upload PHP shells through the Products tab custom file field and access them via the upcp-product-file-uploads directory to execute arbitrary code on the server.
How severe is CVE-2016-20075?: CVE-2016-20075 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-20075 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2016-20075?: 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-2016-20075 have an EU (EUVD) identifier?: Yes. CVE-2016-20075 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10887.
When was CVE-2016-20075 published?: CVE-2016-20075 was published on 2026-06-15 and last updated on 2026-06-17.

References

Other CWE-863 (Incorrect Authorization) vulnerabilities

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CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

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