PRTG Network Monitor up to 18.2.40 /public/login.htm HTTP Request access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.9$0-$5k0.00

Summaryinfo

A vulnerability was found in PRTG Network Monitor up to 18.2.40. It has been classified as critical. Impacted is an unknown function of the file /public/login.htm. The manipulation as part of HTTP Request leads to access control. This vulnerability is referenced as CVE-2018-19410. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PRTG Network Monitor up to 18.2.40 (Network Management Software). This issue affects an unknown code block of the file /public/login.htm. The manipulation as part of a HTTP Request leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including administrator). A remote unauthenticated user can craft an HTTP request and override attributes of the 'include' directive in /public/login.htm and perform a Local File Inclusion attack, by including /api/addusers and executing it. By providing the 'id' and 'users' parameters, an unauthenticated attacker can create a user with read-write privileges (including administrator).

The bug was discovered 10/26/2018. The weakness was published 11/21/2018 (Website). It is possible to read the advisory at ptsecurity.com. The identification of this vulnerability is CVE-2018-19410 since 11/21/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is declared as attacked. The vulnerability was handled as a non-public zero-day exploit for at least 26 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:public/login.htm it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 277614 (Paessler PRTN Network Monitor < 18.2.40.1683 Local File Inclusion (CVE-2018-19410)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13352 (PRTG Network Monitor Multiple Vulnerabilites). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 02/04/2025 with a due date of 02/25/2025:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Upgrading to version 18.2.40.1683 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (277614). Similar entry is available at VDB-127056. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 277614
Nessus Name: Paessler PRTN Network Monitor < 18.2.40.1683 Local File Inclusion (CVE-2018-19410)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PRTG Network Monitor 18.2.40.1683

Timelineinfo

10/26/2018 🔍
11/21/2018 +26 days 🔍
11/21/2018 +0 days 🔍
11/21/2018 +0 days 🔍
11/22/2018 +1 days 🔍
12/09/2025 +2574 days 🔍

Sourcesinfo

Advisory: ptsecurity.com
Status: Confirmed

CVE: CVE-2018-19410 (🔍)
GCVE (CVE): GCVE-0-2018-19410
GCVE (VulDB): GCVE-100-127055
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/22/2018 08:00
Updated: 12/09/2025 05:20
Changes: 11/22/2018 08:00 (65), 04/14/2020 12:53 (1), 02/04/2025 18:45 (28), 02/05/2025 01:47 (12), 02/18/2025 17:03 (1), 12/09/2025 05:20 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!