Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSummary
CVE-2021-25298 is a high-severity OS Command Injection (CWE-78) vulnerability in Nagios Nagios Xi. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.5% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
Nagios XI version xi-5.7.5 contains an OS command injection vulnerability in the file /usr/local/nagiosxi/html/includes/configwizards/cloud-vm/cloud-vm.inc.php. The flaw arises from insufficient sanitization of input supplied by an authenticated user in a single HTTP request, enabling execution of arbitrary operating system commands on the Nagios XI server. The issue is tracked as CVE-2021-25298 with a CVSS 3.1 score of 8.8 and is associated with CWE-78.
An authenticated attacker with network access can exploit the weakness by submitting a crafted HTTP request to the affected component. Successful exploitation allows the attacker to run arbitrary commands on the underlying server, resulting in high impact to confidentiality, integrity, and availability without requiring user interaction.
Public references include the Nagios versions.php page for software updates along with detailed exploit descriptions on PacketStorm and GitHub that demonstrate remote code execution against version 5.7.5. No specific mitigation steps beyond upgrading are described in the provided references.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-12198
Vulnerability Data
Nagios XI version xi-5.7.5 is affected by OS command injection. The vulnerability exists in the file /usr/local/nagiosxi/html/includes/configwizards/cloud-vm/cloud-vm.inc.php due to improper sanitization of authenticated user-controlled input by a single HTTP request, which can lead to OS command injection on the Nagios…
more
XI server.
- CWE(s)
- KEV Date Added
- 18 January 2022
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
—
—
—
V1.2.5V1.2.8V15.2.5
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.