Is CVE-2018-25158 actively exploited?

A weaponized exploit exists for CVE-2018-25158, making exploitation likely. It is not yet confirmed in the CISA KEV catalog.

Can CVE-2018-25158 be exploited remotely?

Yes. CVE-2018-25158 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2018-25158?

CVE-2018-25158 has a CVSS score of 8.8 (HIGH) and an EPSS exploitation probability of 0.06%.

HOME VULNERABILITIESCVE-2018-25158

HIGHWEAPONIZED

CVE-2018-25158

CWE-434Published: February 20, 2026· Updated: Feb 23, 2026

8.8

CVSS v3.1

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

Official Description

Chamilo LMS 1.11.8 contains an arbitrary file upload vulnerability that allows authenticated users to upload and execute PHP files through the elfinder filemanager module. Attackers can upload files with image headers in the social myfiles section, rename them to PHP extensions, and execute arbitrary code by accessing the uploaded files.

NVD Source

Technical Analysis

CVE-2018-25158 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.

A weaponized exploit for CVE-2018-25158 is publicly known. This significantly lowers the barrier for threat actors and increases the urgency for remediation.