Security readout for executives and security teams
Plain-English summary
CVE-2026-2041 is a command injection flaw in Nagios Host related to the Zabbix agent configuration wizard. A logged-in attacker with high privileges could run code on the Nagios server as the service account. This is serious for organizations relying on Nagios for monitoring, but public sources do not show active exploitation.
Executive priority
Treat as a high-priority authenticated RCE risk for Nagios servers. Prioritize systems exposed beyond tightly controlled admin networks or managed by many privileged users. No cited source confirms active exploitation, so urgency is remediation-focused rather than emergency incident response.
Technical view
The flaw is in zabbixagent_configwizard_func, where user-supplied input is not properly validated before a system call. It is classified as CWE-78 and scored CVSS 7.2. Network access, no user interaction, and high privileges are required. Successful exploitation can affect confidentiality, integrity, and availability.
Likely exposure
Exposure is limited to affected Nagios Host version 2026R1 installations where an attacker can authenticate with high privileges and reach the vulnerable configuration wizard functionality.
Exploitation context
Sources state remote code execution is possible after authentication. The CVSS vector requires high privileges. The CVE is not listed as KEV, and the provided sources do not report active exploitation or public exploit availability.
Researcher notes
The source bundle names Nagios Host, while the vendor reference is a Nagios XI 2026R1.0.1 changelog. Confirm product naming and fix mapping before closure. Evidence supports CWE-78 command injection in zabbixagent_configwizard_func, authenticated exploitation, and service-account code execution.
Mitigation direction
- Check Nagios guidance and the 2026R1.0.1 changelog for the vendor-recommended fix.
- Restrict administrative access to Nagios management interfaces to trusted networks and users.
- Review privileged Nagios accounts and remove unnecessary access.
- Monitor for unusual configuration wizard activity or unexpected service-account process execution.
Validation and detection
- Inventory Nagios deployments and confirm whether version 2026R1 is present.
- Verify whether the Zabbix agent configuration wizard is installed or enabled.
- Confirm whether vendor guidance or the 2026R1.0.1 changelog applies to each deployment.
- Review access logs for privileged use of the affected wizard functionality.
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.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution 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-2026-2041 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
- High
- CVSS
- 7.2 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.2HighVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-073CVE reference · x_research-advisory
- vendor-provided URLCVE reference · vendor-advisory
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.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.