Is CVE-2018-25353 actively exploited?

No active exploitation of CVE-2018-25353 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-25353 be exploited remotely?

Yes. CVE-2018-25353 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-25353?

CVE-2018-25353 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2018-25353

CWE-863Published: May 23, 2026· Updated: May 26, 2026

8.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.2th

Official 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.

NVD Source

Technical Analysis

CVE-2018-25353 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.