CVE-2018-8733
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x...
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
- Record
CVE-2018-8733- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-89
- Updated
- 2026-11-02
CVE List No score
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
- Record
CVE-2018-8733- Updated
- 2026-11-02
EUVDEUVD-2018-20343 No score
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
- Record
EUVD-2018-20343- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gmp2-vm3x-mcpx
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x...
Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.
- Record
GHSA-gmp2-vm3x-mcpx- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-89
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Nagios XI 5.2.6 < 5.2.9 / 5.3 / 5.4 - Chained Remote Root | 2018-04-30 |
| Exploit-DB | Nagios XI 5.2.6-5.4.12 - Chained Remote Code Execution (Metasploit) | 2018-07-02 |
| Metasploit | Nagios XI Chained Remote Code Execution | 2016-03-06 |
| Metasploit | Nagios XI Chained Remote Code Execution | 2018-04-17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, Metasploit, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-8733 is a critical vulnerability (CVSS 9.8) in Nagios Xi, published April 18, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 26.6%, the 98th percentile. No source names a fixed version.
References
gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f
exploit-db.com/exploits/44560
nagios.com/downloads/nagios-xi/change-log
blog.redactedsec.net/exploits/2018/04/26/nagios.html
assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
nvd.nist.gov/vuln/detail/CVE-2018-8733
github.com/advisories/GHSA-gmp2-vm3x-mcpx