High severity · published Oct 30, 2025
CVE-2021-47693
Nagios XI < 5.8.5 Core Config Manager (CCM) SQL Injection via Improper Escaping in Search Text
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
The Core Config Manager (CCM) in Nagios XI versions prior to CCM 3.1.3 / Nagios XI 5.8.5 contains a SQL injection vulnerability in the search text handling. Unsanitized user-supplied input was incorporated into SQL queries used by configuration object editors, allowing authenticated users to inject SQL fragments. Successful exploitation could lead to unauthorized disclosure or modification of configuration and application data, and in some environments could allow further compromise of the application or backend database.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 66% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XI
XI · Nagios
before 5.8.5 · source: vendor
NX
Nagios XI · Nagios
before 5.8.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-47693
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-47693
Release Notes
https://www.nagios.com/changelog/nagios-xi/
Third Party Advisory
https://www.vulncheck.com/advisories/nagios-xi-ccm-sqli-via-improper-escaping-in-search-text
More from XI
9.8
CVE-2024-13996
Nagios XI < 2024R1.1.3 Session Not Invalidated After Password Change
9.8
CVE-2024-14003
Nagios XI < 2024R1.2 RCE via NRDP Server Plugins
9.8
CVE-2012-10063
Nagios XI < 2012R1.3 Authenticated SQL Injection in Legacy CCM
9.8
CVE-2024-13994
Nagios XI < 2024R1.1.2 Allow Insecure Logins Missing Authorization
9.8
CVE-2024-13999
Nagios XI < 2024R1.1.3 AD/LDAP Token Authenticated Information Disclosure
