How severe is CVE-2019-9203?

CVE-2019-9203 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-2019-9203 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9203?

CVE-2019-9203 affects Nagios Incident Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9203?

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-2019-9203 published?

CVE-2019-9203 was published on 2019-03-28 and last updated on 2026-06-17.

CVE-2019-9203

CVE-2019-9203 is a critical-severity vulnerability in Nagios Incident Manager with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Nagios Incident Manager
Published: 2019-03-28
Last modified: 2026-06-17

Description

Authorization bypass in Nagios IM (component of Nagios XI) before 2.2.7 allows closing incidents in IM via the API.

Frequently asked questions

What is CVE-2019-9203?: Authorization bypass in Nagios IM (component of Nagios XI) before 2.2.7 allows closing incidents in IM via the API.
How severe is CVE-2019-9203?: CVE-2019-9203 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-2019-9203 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9203?: CVE-2019-9203 affects Nagios Incident Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9203?: 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-2019-9203 published?: CVE-2019-9203 was published on 2019-03-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nagios:incident_manager:*:*:*:*:*:*:*:*

More vulnerabilities in Nagios Incident Manager

CVE-2019-9204 — Critical (CVSS 9.8): SQL injection vulnerability in Nagios IM (component of Nagios XI) before 2.2.7 allows attackers to execute arbitrary…
CVE-2019-9202 — High (CVSS 8.8): Nagios IM (component of Nagios XI) before 2.2.7 allows authenticated users to execute arbitrary code via API key issues.

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