CVE-2021-47700 HIGH

CVE-2021-47700: Nagios XI < 5.8.7 Insecure Permissions on Highcharts Temporary Directory

Vendor Nagios
Product XI
Weakness CWE-250
Published October 30, 2025
Last update November 17, 2025
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/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 5.8.7 used a temporary directory for Highcharts exports with overly permissive ownership/permissions under the Apache user. Local or co-hosted processes could read/overwrite export artifacts or manipulate paths, risking disclosure or tampering and potential code execution depending on deployment.

Key dates

02Disclosure timeline

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