How severe is CVE-2020-28905?

CVE-2020-28905 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-28905 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28905?

CVE-2020-28905 affects Nagios Fusion. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-28905?

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

When was CVE-2020-28905 published?

CVE-2020-28905 was published on 2021-05-24 and last updated on 2026-06-17.

CVE-2020-28905

CVE-2020-28905 is a high-severity vulnerability in Nagios Fusion with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 26% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 26% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Nagios Fusion
Published: 2021-05-24
Last modified: 2026-06-17

Description

Improper Input Validation in Nagios Fusion 4.1.8 and earlier allows an authenticated attacker to execute remote code via table pagination.

Frequently asked questions

What is CVE-2020-28905?: Improper Input Validation in Nagios Fusion 4.1.8 and earlier allows an authenticated attacker to execute remote code via table pagination.
How severe is CVE-2020-28905?: CVE-2020-28905 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-28905 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28905?: CVE-2020-28905 affects Nagios Fusion. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-28905?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-28905 published?: CVE-2020-28905 was published on 2021-05-24 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Nagios Fusion

CVE-2020-28908 — Critical (CVSS 9.8): Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation to nagios.
CVE-2020-28907 — Critical (CVSS 9.8): Incorrect SSL certificate validation in Nagios Fusion 4.1.8 and earlier allows for Escalation of Privileges or Code…
CVE-2020-28904 — Critical (CVSS 9.8): Execution with Unnecessary Privileges in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation as nagios via…
CVE-2020-28902 — Critical (CVSS 9.8): Command Injection in Nagios Fusion 4.1.8 and earlier allows Privilege Escalation from apache to root in cmd_subsys.php.
CVE-2020-28901 — Critical (CVSS 9.8): Command Injection in Nagios Fusion 4.1.8 and earlier allows for Privilege Escalation or Code Execution as root via…
CVE-2020-28900 — Critical (CVSS 9.8): Insufficient Verification of Data Authenticity in Nagios Fusion 4.1.8 and earlier and Nagios XI 5.7.5 and earlier…

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