CVE-2021-37348

Q: How do I fix CVE-2021-37348?

Upgrade nagios xi to 5.8.5 or later.

Q: Is CVE-2021-37348 being actively exploited?

Not that we know of. CVE-2021-37348 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 85% of all scored CVEs.

Q: How severe is CVE-2021-37348?

CVE-2021-37348 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2021-37348 affect?

Published advisories record a fix for nagios xi (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

Nagios XI before version 5.8.5 is vulnerable to local file inclusion through improper limitation of a pathname in index.php.

CWE-552

How to fix

Remediation Available

nagios xiNVD

Affected:< 5.8.5Fixed in:5.8.5CVE-2021-37348derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

2.78%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Vendor Advisory1

nagios.com

Related Vulnerabilities

Other CWE-552 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-17519	High	7.5	98%	KEV	Fix
CVE-2025-11371	High	7.5	92%	KEV	Fix
CVE-2023-50164	Critical	9.8	81%	-	Fix
CVE-2016-3715	Medium	5.5	75%	KEV	Fix
CVE-2020-15175	High	7.4	71%	-	Fix
CVE-2021-39316	High	7.5	66%	-	-

Common questions

How do I fix CVE-2021-37348?

Upgrade nagios xi to 5.8.5 or later.

Is CVE-2021-37348 being actively exploited?

Not that we know of. CVE-2021-37348 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.8% is the estimated probability that it will be exploited in the next 30 days. That is higher than 85% of all scored CVEs.

How severe is CVE-2021-37348?

CVE-2021-37348 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2021-37348 affect?

Published advisories record a fix for nagios xi (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2021-37348

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.