CVE-2021-28924

Network Analyzer vulnerability

CVSS

6.1

EPSS

9.2%

EPSS pct

95th

Exploited

No known

Self Authenticated XSS in Nagios Network Analyzer before 2.4.2 via the nagiosna/groups/queries page.

Affected vendor

Nagios

Affected product

Network Analyzer

CVSS vector

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

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2021-04-08

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 9.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2021-28924

Confirm whether Nagios Network Analyzer is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-28924.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-28924

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-28924 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-28924?

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