CVE-2020-36863 HIGH

CVE-2020-36863: Nagios XI < 5.7.2 Unrestricted File Upload via Audio Import Directory

Vendor Nagios
Product XI
Weakness CWE-434 · Unrestricted file upload
Published October 30, 2025
Last update November 17, 2025

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Nagios XI versions prior to 5.7.2 allow PHP files to be uploaded to the Audio Import directory and executed from that location. The upload handler did not properly restrict file types or enforce storage outside of the webroot, and the web server permitted execution within the upload directory. An authenticated attacker with access to the audio import feature could upload a crafted PHP file and then request it to achieve remote code execution with the privileges of the application service.

Key dates

02Disclosure timeline

October 30, 2025 CVE published
November 17, 2025 Record updated