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9.8
CRITICAL CVSS 3.1
CVE-2025-34249
Nagios Fusion < 2024R2.1 2FA Brute Force Bypass
Description

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it is a duplicate of CVE-2025-60425.

INFO

Published Date :

Oct. 30, 2025, 10:15 p.m.

Last Modified :

Nov. 7, 2025, 7:15 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-34249 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 fusion
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL [email protected]
CVSS 4.0 CRITICAL 83251b91-4cc7-4094-a5c7-464a1b83ea10
CVSS 4.0 CRITICAL [email protected]
Solution
Update Nagios Fusion to patch the two-factor authentication bypass vulnerability.
  • Apply the vendor-supplied update to Nagios Fusion.
  • Ensure rate limiting is enforced for 2FA.
  • Implement account lockout policies for failed attempts.

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).

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

The following list is the news that have been mention CVE-2025-34249 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-34249 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.

  • CVE Rejected by [email protected]

    Nov. 07, 2025

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2025

    Action Type Old Value New Value
    Changed Description Nagios Fusion versions prior to 2024R2.1 contain a brute-force bypass in the Two-Factor Authentication (2FA) implementation. The application did not properly enforce rate limiting or account lockout for repeated failed 2FA verification attempts, allowing a remote attacker to repeatedly try second-factor codes for a targeted account. By abusing the lack of enforcement, an attacker could eventually successfully authenticate to accounts protected by 2FA. Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it is a duplicate of CVE-2025-60425.
    Removed CVSS V4.0 VulnCheck: AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Removed CVSS V3.1 NIST: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Removed CWE VulnCheck: CWE-307
    Removed CPE Configuration OR *cpe:2.3:a:nagios:fusion:2024:r1.2:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.2:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.3:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:*:*:*:*:*:*:*:* versions up to (including) 4.2.0 *cpe:2.3:a:nagios:fusion:2024:r1.1.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r2:*:*:*:*:*:*
    Removed Reference VulnCheck: https://www.nagios.com/changelog/nagios-fusion/
    Removed Reference VulnCheck: https://www.nagios.com/products/security/#nagios-xi
    Removed Reference VulnCheck: https://www.vulncheck.com/advisories/nagios-fusion-2fa-brute-force-bypass
    Removed Reference Type VulnCheck: https://www.nagios.com/changelog/nagios-fusion/ Types: Product
    Removed Reference Type VulnCheck: https://www.nagios.com/products/security/#nagios-xi Types: Vendor Advisory
    Removed Reference Type VulnCheck: https://www.vulncheck.com/advisories/nagios-fusion-2fa-brute-force-bypass Types: Third Party Advisory
  • Initial Analysis by [email protected]

    Nov. 06, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CPE Configuration OR *cpe:2.3:a:nagios:fusion:2024:r1.2:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.2:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.0.3:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r1.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:*:*:*:*:*:*:*:* versions up to (including) 4.2.0 *cpe:2.3:a:nagios:fusion:2024:r1.1.1:*:*:*:*:*:* *cpe:2.3:a:nagios:fusion:2024:r2:*:*:*:*:*:*
    Added Reference Type VulnCheck: https://www.nagios.com/changelog/nagios-fusion/ Types: Product
    Added Reference Type VulnCheck: https://www.nagios.com/products/security/#nagios-xi Types: Vendor Advisory
    Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/nagios-fusion-2fa-brute-force-bypass Types: Third Party Advisory
  • New CVE Received by [email protected]

    Oct. 30, 2025

    Action Type Old Value New Value
    Added Description Nagios Fusion versions prior to 2024R2.1 contain a brute-force bypass in the Two-Factor Authentication (2FA) implementation. The application did not properly enforce rate limiting or account lockout for repeated failed 2FA verification attempts, allowing a remote attacker to repeatedly try second-factor codes for a targeted account. By abusing the lack of enforcement, an attacker could eventually successfully authenticate to accounts protected by 2FA.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-307
    Added Reference https://www.nagios.com/changelog/nagios-fusion/
    Added Reference https://www.nagios.com/products/security/#nagios-xi
    Added Reference https://www.vulncheck.com/advisories/nagios-fusion-2fa-brute-force-bypass
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.
Vulnerability Scoring Details
Base CVSS Score: 9.3
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact