Security readout for executives and security teams
Plain-English summary
CVE-2018-8735 is a remote command execution issue in older Nagios XI releases. If exposed, an attacker could run commands on the monitoring server, which may create a path into sensitive infrastructure visibility and credentials.
Executive priority
Treat this as high priority for any legacy Nagios XI deployment. Monitoring servers are operationally sensitive, and public exploit references reduce the margin for delay.
Technical view
The CVE describes OS command injection in Nagios XI 5.2.x through 5.4.x before 5.4.13. A remote attacker may execute arbitrary commands on the target system. The provided sources do not include CVSS, CWE, authentication, or precise attack-vector details.
Likely exposure
Exposure is likely limited to organizations running Nagios XI 5.2.x through 5.4.x before 5.4.13. Internet-facing or broadly reachable Nagios XI systems should be prioritized for review.
Exploitation context
Public exploit references and write-ups are listed in the source bundle, including Exploit-DB entries. The bundle says KEV is false, so confirmed active exploitation is not established here.
Researcher notes
The source bundle confirms affected version range and RCE impact but lacks scoring and precondition detail. Validate exposure through version checks and vendor notes, not exploit reproduction.
Mitigation direction
- Upgrade affected Nagios XI systems to 5.4.13 or later.
- Review Nagios change logs and vendor guidance for fixed versions.
- Restrict network access to Nagios XI management interfaces.
- Audit Nagios XI hosts for unexpected commands, processes, or account changes.
Validation and detection
- Inventory all Nagios XI instances and record exact versions.
- Flag versions 5.2.x through 5.4.x before 5.4.13.
- Confirm management interfaces are not publicly exposed.
- Review logs around April 2018 onward for suspicious command execution indicators.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-8735 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0fCVE reference · x_refsource_MISC
- 44560CVE reference · exploit, x_refsource_EXPLOIT-DB
- https://www.nagios.com/downloads/nagios-xi/change-log/CVE reference · x_refsource_MISC
- https://blog.redactedsec.net/exploits/2018/04/26/nagios.htmlCVE reference · x_refsource_MISC
- https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXTCVE reference · x_refsource_MISC
- 44969CVE reference · exploit, x_refsource_EXPLOIT-DB
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.