CVE-2020-28900
CVSS v3
9.8
CRITICAL
EPSS Score
2.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Insufficient Verification of Data Authenticity in Nagios Fusion 4.1.8 and earlier and Nagios XI 5.7.5 and earlier allows for Escalation of Privileges or Code Execution as root via vectors related to an untrusted update package to upgrade_to_latest.sh.
Technical details
- Published
- 2021-05-24
Frequently asked questions
What is CVE-2020-28900?
Insufficient Verification of Data Authenticity in Nagios Fusion 4.1.8 and earlier and Nagios XI 5.7.5 and earlier allows for Escalation of Privileges or Code Execution as root via vectors related to an untrusted update package to upgrade_to_latest.sh.
Is CVE-2020-28900 actively exploited?
Active exploitation of CVE-2020-28900 has not been confirmed. Its EPSS score was 2.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-28900?
CVE-2020-28900 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2020-28900 affecting your environment?
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