CVE-2018-8733
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 26.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 26.56% probability · 98th percentile
- Public exploits
- 2 in Exploit-DB · verified · first 30 April 2018
- CISA KEV
- Not listed
- Weakness
- CWE-89
- Affected
- nagios/nagios xi
- Source
- cve@mitre.org
EPSS moved from 23.5% on 21 September 2026 to 26.6% on 27 October 2026, peaking at 27.0% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (2)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXTRelease Notes, Vendor Advisory
- https://blog.redactedsec.net/exploits/2018/04/26/nagios.htmlExploit, Technical Description, Third Party Advisory
- https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0fThird Party Advisory
- https://www.exploit-db.com/exploits/44560/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44969/Exploit, Third Party Advisory, VDB Entry
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
- https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXTRelease Notes, Vendor Advisory
- https://blog.redactedsec.net/exploits/2018/04/26/nagios.htmlExploit, Technical Description, Third Party Advisory
- https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0fThird Party Advisory
- https://www.exploit-db.com/exploits/44560/Exploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/44969/Exploit, Third Party Advisory, VDB Entry
- https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.