How severe is CVE-2020-28908?

CVE-2020-28908 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-28908 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28908?

CVE-2020-28908 affects Nagios Fusion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28908?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-28908 published?

CVE-2020-28908 was published on 2021-05-24 and last updated on 2026-06-17.

CVE-2020-28908

CVE-2020-28908 is a critical-severity vulnerability in Nagios Fusion with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Nagios Fusion
Published: 2021-05-24
Last modified: 2026-06-17

Description

Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to nagios.

Frequently asked questions

What is CVE-2020-28908?: Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to nagios.
How severe is CVE-2020-28908?: CVE-2020-28908 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-28908 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28908?: CVE-2020-28908 affects Nagios Fusion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28908?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-28908 published?: CVE-2020-28908 was published on 2021-05-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nagios:fusion:*:*:*:*:*:*:*:*

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