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CVE-2018-15711

46
FAUCET Score

CVE-2018-15711 is a critical vulnerability in Nagios XI 5.5.6 that allows remote authenticated attackers to reset and regenerate the API keys of more privileged users. This enables attackers to execute API calls with elevated privileges, leading to high impacts on confidentiality, integrity, and availability. The vulnerability has a CVSS score of 8.8 (HIGH) and an EPSS score indicating a higher likelihood of exploitation compared to most CVEs. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), there is also no significant community discussion or media coverage surrounding this issue.

Impacted Technologies

VendorProductVersion(s)CPE
5.5.6CPE matchmatch criteria
cpe:2.3:a:nagios:nagios_xi:5.5.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
36.01%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3601 is in the 98th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Vendor Patches (3)

dogukanurkervendor investigatingvia llm_extracted
posthogvendor investigatingvia llm_extracted
qlikvendor investigatingvia llm_extracted

Vendor Advisories (3)

dogukanurkerllm-dogukanurker-870a9e7eabc79aa0HIGH

[R2] Nagios XI Multiple Vulnerabilities

Nov 13, 2018
qlikllm-qlik-755ce6d1011394b1HIGH

[R2] Nagios XI Multiple Vulnerabilities

Nov 13, 2018
posthogllm-posthog-f5f4a45be457c255HIGH

[R2] Nagios XI Multiple Vulnerabilities

Nov 13, 2018

References

tenable.com / security/research/tra-2018-37
ExploitThird Party Advisory