CVE-2024-12833
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 · uneditedPaessler PRTG Network Monitor SNMP Cross-Site Scripting Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Paessler PRTG Network Monitor. Some user interaction on the part of an administrator is required to exploit this vulnerability. The specific flaw exists within the PRTG Network Monitor web interface. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-23371.
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 confidenceA cross-site scripting (XSS) vulnerability in Paessler PRTG Network Monitor's web interface allows attackers to inject arbitrary JavaScript through unsanitized user input. This script injection can be leveraged to bypass authentication mechanisms, likely through session hijacking or credential theft via the injected payload. The attack requires some form of administrator interaction (e.g., clicking a malicious link or viewing crafted content).
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< 25.1.102.1373CVSS 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
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Identify PRTG Network Monitor versionCheck the installed version via the PRTG Administration Manager, the web interface (Help > About PRTG), or the Windows Registry at HKEY_LOCAL_MACHINE\SOFTWARE\Paessler\PRTG Network Monitor\VersionAffected if The installed version is lower than 25.1.102.1373
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Verify web interface accessibilityConfirm whether the PRTG web interface (default ports 443 or 8080) is accessible from network locations, noting that the vulnerability requires an administrator to interact with malicious contentAffected if The web interface is exposed to untrusted networks and administrators could potentially click malicious links
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Check for SNMP configurationReview PRTG sensors and device configurations for SNMP-based monitoring (SNMP traffic, SNMP interface, SNMP disk, etc.) as the summary indicates SNMP inputs may be unsanitizedAffected if SNMP sensors or community strings are configured and could accept crafted input through the web interface
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Confirm administrative accountsReview which user accounts have administrative privileges in PRTG and determine if they have access to the web interfaceAffected if Administrative users exist and have web interface access, making them potential targets for the XSS-based session hijacking
You are affected if running any version of PRTG Network Monitor below 25.1.102.1373 with the web interface accessible to users who could encounter malicious SNMP-related content.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor data25.1.102.1373
Apply vendor patches when available; until then, restrict administrative access to the PRTG web interface to trusted networks only, implement Content Security Policy (CSP) headers, and sanitize all SNMP-related inputs before rendering.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-12833 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-12833 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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