How severe is CVE-2018-20526?

CVE-2018-20526 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-2018-20526 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-20526?

CVE-2018-20526 affects Roxyfileman Roxy Fileman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20526?

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.

When was CVE-2018-20526 published?

CVE-2018-20526 was published on 2019-03-21 and last updated on 2026-06-17.

CVE-2018-20526

CVE-2018-20526 is a critical-severity vulnerability in Roxyfileman Roxy Fileman with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 73% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 73% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Roxyfileman Roxy Fileman
Published: 2019-03-21
Last modified: 2026-06-17

Description

Roxy Fileman 1.4.5 allows unrestricted file upload in upload.php.

Frequently asked questions

What is CVE-2018-20526?: Roxy Fileman 1.4.5 allows unrestricted file upload in upload.php.
How severe is CVE-2018-20526?: CVE-2018-20526 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-2018-20526 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 73% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-20526?: CVE-2018-20526 affects Roxyfileman Roxy Fileman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20526?: 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.
When was CVE-2018-20526 published?: CVE-2018-20526 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:roxyfileman:roxy_fileman:1.4.5:*:*:*:*:*:*:*

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CVE-2018-12042 — High (CVSS 7.5): Roxy Fileman through v1.4.5 has Directory traversal via the php/download.php f parameter.

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