How severe is CVE-2025-4828?

CVE-2025-4828 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-4828 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-4828?

CVE-2025-4828 affects Schiocco Support Board. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-4828?

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

Does CVE-2025-4828 have an EU (EUVD) identifier?

Yes. CVE-2025-4828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20755.

When was CVE-2025-4828 published?

CVE-2025-4828 was published on 2025-07-09 and last updated on 2026-06-17.

CVE-2025-4828

CVE-2025-4828 is a critical-severity vulnerability in Schiocco Support Board with a CVSS 3.x base score of 9.8. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-20755
Weakness: CWE-22
Affected product: Schiocco Support Board
Published: 2025-07-09
Last modified: 2026-06-17

Description

The Support Board plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the sb_file_delete function in all versions up to, and including, 3.8.0. This makes it possible for attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). An attacker can leverage CVE-2025-4855 vulnerability to exploit this vulnerability unauthenticated.

Frequently asked questions

What is CVE-2025-4828?: The Support Board plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the sb_file_delete function in all versions up to, and including, 3.8.0. This makes it possible for attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). An attacker can leverage CVE-2025-4855 vulnerability to exploit this vulnerability unauthenticated.
How severe is CVE-2025-4828?: CVE-2025-4828 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-4828 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-4828?: CVE-2025-4828 affects Schiocco Support Board. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-4828?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-4828 have an EU (EUVD) identifier?: Yes. CVE-2025-4828 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-20755.
When was CVE-2025-4828 published?: CVE-2025-4828 was published on 2025-07-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:schiocco:support_board:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Schiocco Support Board

CVE-2025-4855 — Critical (CVSS 9.8): The Support Board plugin for WordPress is vulnerable to unauthorized access/modification/deletion of data due to use of…
CVE-2026-4815 — High (CVSS 8.8): A SQL Injection vulnerability has been found in Support Board v3.7.7. This vulnerability allows an attacker to…
CVE-2021-24823 — High (CVSS 8.1): The Support Board WordPress plugin before 3.3.6 does not have any CSRF checks in actions handled by the…
CVE-2026-4816 — Medium (CVSS 5.4): A Reflected Cross Site Scripting (XSS) vulnerability has been found in Support Board v3.7.7. This vulnerability allows…
CVE-2021-24807 — Medium (CVSS 5.4): The Support Board WordPress plugin before 3.3.5 allows Authenticated (Agent+) users to perform Cross-Site Scripting…

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