CVE-2018-25353

Description

Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

8.8 / 10

CVSS vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Effective score

8.8 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2018-25353

Linked Threat

CVE-2018-25353 — CVE-2018-25353

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-05-23 19:16:55 UTC

NVD last modified

2026-07-23 17:10:00 UTC

NVD CVSS v3.1

8.8 / 10 HIGH source: disclosure@vulncheck.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability subscore

2.8 / 10

Impact subscore

5.9 / 10

EPSS score

0.0045 (probability of exploitation in next 30 days)

EPSS percentile

37.07% vs all CVEs — higher = more likely to be exploited, as of 2026-08-01

NVD-assigned CWE(s): CWE-863 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2018-21876

Assigner

VulnCheck

Published

May 23, 2026, 6:30:53 PM

Updated

May 26, 2026, 5:55:36 PM

EUVD base score (CVSS 4.0)

8.7 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EUVD-reported EPSS

0.4500

Vendors

Redaxo

Products

Redaxo CMS Mediapool (0 ≤5.5.1)

Aliases

GHSA-x5jj-8qq8-g67q

ENISA description: Redaxo CMS Mediapool Addon 5.5.1 and older contains an arbitrary file upload vulnerability that allows authenticated users to bypass file extension blacklist restrictions. Attackers with editor accounts can upload executable files by using obfuscated extensions like php71 or php53 to evade the blacklist filter and execute arbitrary code.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (7)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2018-25353 tenable:nvd.nist.gov
• https://redaxo.org tenable:redaxo.org
• https://redaxo.org/download/redaxo/5.5.1.zip tenable:redaxo.org
• https://www.cve.org/CVERecord?id=CVE-2018-25353 tenable:www.cve.org
• https://www.exploit-db.com/exploits/44891 tenable:www.exploit-db.com
• https://www.first.org/epss/ tenable:www.first.org
• https://www.vulncheck.com/advisories/redaxo-cms-mediapool-addon-arbitrary-file-upload tenable:www.vulncheck.com

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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