Security readout for executives and security teams
Plain-English summary
Nagios XI 5.6.9 lets a logged-in user run operating system commands through the scheduled report feature. The commands run as the web-server account, which can still expose monitoring data, credentials, and internal systems. The sources do not show public active exploitation or a vendor fix.
Executive priority
Prioritize assessment if Nagios XI supports production monitoring or privileged internal visibility. This is not confirmed as actively exploited in the supplied sources, but authenticated RCE on monitoring infrastructure can become a serious incident path.
Technical view
CVE-2019-20197 is a post-authentication command injection in schedulereport.php. Shell metacharacters in the id parameter allow arbitrary OS command execution in the web-server user context. The source bundle lists Nagios XI 5.6.9 only and provides no CVSS score, CWE, CPE, patch version, or mitigation detail.
Likely exposure
Exposure is most likely where Nagios XI 5.6.9 is deployed and authenticated users can access scheduled reports. The provided sources do not establish impact for other Nagios XI versions or unauthenticated users.
Exploitation context
The CVE record describes authenticated command execution. CISA KEV is false in the bundle, and no cited source here confirms active exploitation. Treat exploit status as unconfirmed, not absent.
Researcher notes
Evidence is limited to the CVE description and one external write-up reference. The affected metadata is incomplete, and no official patch information is included. Avoid assuming unauthenticated reachability, broader versions, or exploit-in-the-wild status without additional vendor or threat-intelligence confirmation.
Mitigation direction
- Check Nagios vendor guidance for the fixed release or official workaround.
- Upgrade affected Nagios XI 5.6.9 systems when vendor guidance identifies a safe version.
- Restrict Nagios XI access to trusted administrators and management networks.
- Remove or disable unnecessary authenticated Nagios XI accounts.
- Monitor the web-server account for unexpected process execution.
Validation and detection
- Inventory Nagios XI deployments and confirm whether version 5.6.9 is present.
- Verify which users can access schedulereport.php or scheduled reporting functions.
- Review web and application logs for suspicious schedulereport.php id parameter activity.
- Check host logs for unusual commands run by the web-server user.
- Document whether vendor remediation has been applied.
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.
CVE-2019-20197 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://code610.blogspot.com/2019/12/postauth-rce-in-latest-nagiosxi.htmlCVE reference · x_refsource_MISC
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.