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CVE-2021-28924

23
FAUCET Score

CVE-2021-28924 describes a self-authenticated Cross-Site Scripting (XSS) vulnerability in Nagios Network Analyzer versions prior to 2.4.2, specifically on the nagiosna/groups/queries page. This medium-severity vulnerability (CVSS 6.1) allows an attacker to execute arbitrary scripts in the victim's browser, potentially leading to information disclosure or limited integrity impact, requiring user interaction and network access. While the FAUCET Risk Score is high at 97/100, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.3CPE matchmatch criteria
cpe:2.3:a:nagios:network_analyzer:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
9.25%
Probability of exploitation in next 30 days
EPSS Percentile
94.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0925 is in the 98th percentile among its peer group of 26,234 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

medium.com / stolabs/issues-found-on-nagios-network-analyzer-2-4-2-50ec4ffb5e25
ExploitThird Party Advisory
nagios.com / downloads/nagios-network-analyzer/change-log
Release NotesVendor Advisory