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CVE-2023-40933

30
FAUCET Score

CVE-2023-40933 is a high-severity SQL injection vulnerability affecting Nagios XI versions 5.11.1 and below. Authenticated attackers with announcement banner configuration privileges can exploit this flaw by manipulating the ID parameter in the update_banner_message() function to execute arbitrary SQL commands. With a CVSS score of 8.8, successful exploitation could lead to full compromise of confidentiality, integrity, and availability. While there is no known public exploit code or active exploitation, the vulnerability has garnered some community discussion, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.11.2CPE matchmatch criteria
cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
3.11%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0311 is in the 85th 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

Remediation records are not available for this CVE.

References

outpost24.com / blog/nagios-xi-vulnerabilities
Third Party Advisory
nagios.com / products/security
Vendor Advisory