Known Exploited Vulnerability
8.8
HIGH
CVE-2021-25296
Nagios XI OS Command Injection - [Actively Exploited]
Description

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/windowswmi/windowswmi.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 XI server.

INFO

Published Date :

Feb. 15, 2021, 1:15 p.m.

Last Modified :

March 14, 2025, 5:07 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Nagios XI contains a vulnerability which can lead to OS command injection on the Nagios XI server.

Required Action :

Apply updates per vendor instructions.

Notes :

https://nvd.nist.gov/vuln/detail/CVE-2021-25296

Public PoC/Exploit Available at Github

CVE-2021-25296 has a 6 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-25296 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Nagios nagios_xi
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-25296.

URL Resource
http://nagios.com Product
http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html Third Party Advisory VDB Entry
https://assets.nagios.com/downloads/nagiosxi/versions.php Exploit Product
https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md Exploit Third Party Advisory
https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and Exploit Third Party Advisory
http://nagios.com Product
http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html Third Party Advisory VDB Entry
https://assets.nagios.com/downloads/nagiosxi/versions.php Exploit Product
https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md Exploit Third Party Advisory
https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
k0pak4/k0pak4

None

Updated: 9 months, 3 weeks ago
1 stars 0 fork 0 watcher
Born at : June 21, 2022, 12:47 p.m. This repo has been linked 16 different CVEs too.
Profile Photo
Ostorlab/KEV

Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.

cisa-kev vulnerability 0day cisa exploits

Updated: 2 months, 1 week ago
556 stars 36 fork 36 watcher
Born at : April 19, 2022, 8:58 a.m. This repo has been linked 1248 different CVEs too.
Profile Photo
tzwlhack/Vulnerability

None

Updated: 2 months, 1 week ago
75 stars 15 fork 15 watcher
Born at : Oct. 13, 2021, 4:56 a.m. This repo has been linked 175 different CVEs too.
Profile Photo
fs0c-sh/nagios-xi-5.7.5-bugs

Bugs reported to Nagios XI

Updated: 2 years, 1 month ago
5 stars 0 fork 0 watcher
Born at : Feb. 13, 2021, 8:27 a.m. This repo has been linked 4 different CVEs too.
Profile Photo
r0eXpeR/redteam_vul

红队作战中比较常遇到的一些重点系统漏洞整理。

redteam security hacking

Updated: 2 months, 1 week ago
2486 stars 436 fork 436 watcher
Born at : Nov. 21, 2020, 9:42 a.m. This repo has been linked 37 different CVEs too.
Profile Photo
ARPSyndicate/kenzer-templates

essential templates for kenzer [DEPRECATED]

kenzer vulnerabilities kenzer-templates arpsyndicate

Python Shell Ruby

Updated: 2 months, 2 weeks ago
110 stars 35 fork 35 watcher
Born at : Sept. 18, 2020, 9:03 p.m. This repo has been linked 1654 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-25296 vulnerability anywhere in the article.

  • Cyber Security News
Nagios XI Vulnerability Allows Unauthenticated Users to View Other User Details & Email

A significant security vulnerability (CVE-2024-54961) has been identified in Nagios XI 2024R1.2.2, enabling unauthenticated attackers to retrieve sensitive user information, including usernames and em ... Read more

Published Date: Feb 24, 2025 (1 month, 1 week ago)
CVE-2024-54961 CVE-2021-25296 CVE-2018-15708

The following table lists the changes that have been made to the CVE-2021-25296 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Mar. 14, 2025

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:nagios:nagios_xi:5.7.5:*:*:*:*:*:*:* OR *cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* versions from (including) 5.5.6 from (including) 5.7.5
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 04, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://nagios.com
    Added Reference http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html
    Added Reference http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html
    Added Reference https://assets.nagios.com/downloads/nagiosxi/versions.php
    Added Reference https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md
    Added Reference https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and
  • Modified Analysis by [email protected]

    Jul. 24, 2024

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html Third Party Advisory, VDB Entry
    Changed Reference Type https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and No Types Assigned https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and Exploit, Third Party Advisory
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 08, 2023

    Action Type Old Value New Value
    Changed CWE CWE-78 NVD-CWE-Other
  • CVE Modified by [email protected]

    Mar. 01, 2023

    Action Type Old Value New Value
    Added Reference https://www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-module-and [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 08, 2023

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    Feb. 26, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Feb. 18, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://nagios.com No Types Assigned http://nagios.com Product
    Changed Reference Type https://assets.nagios.com/downloads/nagiosxi/versions.php No Types Assigned https://assets.nagios.com/downloads/nagiosxi/versions.php Exploit, Product
    Changed Reference Type https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md No Types Assigned https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md Exploit, Third Party Advisory
    Added CWE NIST CWE-78
    Added CPE Configuration OR *cpe:2.3:a:nagios:nagios_xi:5.7.5:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-25296 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-25296 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

93.35 }} 0.53%

score

0.99809

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: