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CVE-2020-28902

32
FAUCET Score

CVE-2020-28902 is a critical command injection vulnerability affecting Nagios Fusion versions 4.1.8 and earlier, allowing an unauthenticated attacker to escalate privileges from the apache user to root via cmd_subsys.php. With a CVSS score of 9.8, this flaw presents a severe risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high FAUCET Risk Score of 89/100 indicates its significant inherent danger.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.1.8CPE matchmatch criteria
cpe:2.3:a:nagios:fusion:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.44%
Probability of exploitation in next 30 days
EPSS Percentile
93.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0644 is in the 88th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/162783/Nagios-XI-Fusion-Privilege-Escalation-Cross-Site-Scripting-Code-Execution.html
Third Party AdvisoryVDB Entry
skylightcyber.com / 2021/05/20/13-nagios-vulnerabilities-7-will-shock-you
ExploitThird Party Advisory
nagios.com / downloads/nagios-xi/change-log
Release NotesVendor Advisory