dbcve.org
Log ServerApplication · Nagios

CVE-2025-34298

HIGH · 8.8 CVSS v3.1 Published 2025-10-30
Fix available
A fix is available. Upgrade to 2024 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Nagios Log Server versions prior to 2024R1.3.2 contain a privilege escalation vulnerability in the account email-change workflow. A user could set their own email to an invalid value and, due to insufficient validation and authorization checks tied to email identity state, trigger inconsistent account state that granted elevated privileges or bypassed intended access controls.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

Nagios Log Server versions before 2024R1.3.2 have a privilege escalation vulnerability in the account email-change workflow. Attackers can set their email to an invalid value, causing inconsistent account state that bypasses authorization checks and grants elevated privileges.

MitigationUpgrade to Nagios Log Server 2024R1.3.2 or later which contains proper validation and authorization checks for the email-change workflow.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Log ServerApplication
Affected:< 2024= 2024

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Nagios Log Server installation
    Locate Nagios Log Server on the system - typically installed in /usr/local/nagios/logserver, /opt/nagios/logserver, or via package manager. Check for the nagioslogserver service and web interface.
    Affected if Nagios Log Server is installed on the system
  2. Identify installed version
    Access the Nagios Log Server web interface and navigate to the About or System Info page to view the version number. Alternatively, check the installed package version using the system package manager or look for a version file in the installation directory.
    Affected if The installed version is before 2024R1.3.2 (any version in the 2024 line before 2024R1.3.2, or any version prior to 2024)
  3. Verify user account access
    Log into Nagios Log Server with a standard user account (non-admin) and navigate to the account settings or profile section where email addresses can be modified.
    Affected if Standard user accounts have access to modify their email address
  4. Check email change functionality
    Attempt to change the logged-in user email address to an invalid or unexpected format (such as an empty string, malformed address, or an email belonging to another user) through the account settings interface.
    Affected if The system accepts invalid or improperly validated email values without proper authorization checks
  5. Review account privilege assignment
    After modifying the email address to an invalid value, check if the account's permissions, role, or access level have changed unexpectedly or if the account gains access to features or data it should not have.
    Affected if Changing email to an invalid value results in elevated privileges, access control bypass, or unexpected account state changes

A user is affected if Nagios Log Server version is before 2024R1.3.2 and the email-change workflow permits invalid email values that cause privilege escalation or access control bypass.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2024 or later
Fixed in 2024
Interim mitigation

Upgrade to Nagios Log Server 2024R1.3.2 or later which contains proper validation and authorization checks for the email-change workflow.

Recommended fix High confidence

Nagios Log Server 2024R1.3.2

  1. Back up the current Nagios Log Server configuration and database before proceeding with the upgrade
  2. Download Nagios Log Server version 2024R1.3.2 or later from the official Nagios website (www.nagios.com)
  3. Stop the Nagios Log Server services to ensure a clean upgrade process
  4. Install the 2024R1.3.2 version following the standard Nagios Log Server upgrade documentation
  5. After installation, verify that all services start correctly and the web interface is accessible
  6. Test the email-change functionality to confirm the vulnerability is remediated
  7. Review user accounts and privileges to ensure no unauthorized privilege escalation occurred prior to the upgrade
  8. Update any automated deployment scripts or configuration management to reference the new version
Caveat Review release notes for any configuration changes or migration requirements between versions; standard upgrade procedures should apply

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Log Server Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-34298 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-34298 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data