An issue was discovered in PRTG Network Monitor before 18.2.39.
An issue was discovered in PRTG Network Monitor before 18.2.39. An attacker who has access to the PRTG System Administrator web console with administrative privileges can exploit an OS command injection vulnerability (both on the server and on devices) by sending malformed parameters in sensor or notification management scenarios.
- Published
- Jul 2, 2018
- Updated
- Jun 16, 2026
- EPSS
- 87.0% · 100th percentile
- CWE
- CWE-78
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Report tools
Action score
84
Now
Patch today or shut off access.
- CVSS
- 28 / 40 · 7.2 / 10
- CISA KEV
- 30 / 30 · Listed
- EPSS
- 26 / 30 · 87.0%
CISA SSVC decision
- Exploitation
- active
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Actively exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on Feb 4, 2025. That signals real attacks, not theory.
Remediation deadline for government agencies: Feb 25, 2025.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| paessler | prtg network monitor | cpe:2.3:a:paessler:prtg_network_monitor |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- paessler prtg network monitorbefore 18.2.39
- paessler prtg network monitorafter 19.3.52 · before 21.2.68
Same product
paessler: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-19410PRTG Network Monitor before 18.2.40.1683 allows remote unauthenticated attackers to create users with read-write privileges (including adminKEV98Now
- CVE-2023-32782A command injection was identified in PRTG 23.2.84.1566 and earlier versions in the Dicom C-ECHO sensor where an authenticated user with wri45Plan
- CVE-2020-10374A webserver component in Paessler PRTG Network Monitor 19.2.50 to PRTG 20.1.56 allows unauthenticated remote command execution via a crafted40Plan
- CVE-2020-11547PRTG Network Monitor before 20.1.57.1745 allows remote unauthenticated attackers to obtain information about probes running or the server it37Monitor
- CVE-2018-19204PRTG Network Monitor before 18.3.44.2054 allows a remote authenticated attacker (with read-write privileges) to execute arbitrary code and O36Monitor
- CVE-2023-31452A cross-site request forgery (CSRF) token bypass was identified in PRTG 23.2.84.1566 and earlier versions that allows remote attackers to pe35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×1
- Proof-of-concept repository on GitHub ×5
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | webapps | 2019-03-11 |
| Metasploit module | exploit/windows/http/prtg_authenticated_rcePRTG Network Monitor Authenticated RCEexploit | 2018-06-25 |
| Proof-of-concept repository on GitHub | stars:36 | 2019-03-31 |
| Proof-of-concept repository on GitHub | stars:0 | 2021-01-02 |
| Proof-of-concept repository on GitHub | stars:0 | 2021-07-29 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-04-07 |
| Proof-of-concept repository on GitHub | stars:0 | 2026-06-13 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-8 d
- Published
- First PoC+251 d
- CISA KEV+2408 d
- TodaySep 30, 2026+3012 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Root cause
User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.
The bug in code
The whole CWE-78 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const host = req.body.host;exec("ping -c 1 " + host, onResult);Fixed
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Command DelimitersCAPEC-15likelihood: High · High
- Exploiting Multiple Input Interpretation LayersCAPEC-43likelihood: Medium · High
- Argument InjectionCAPEC-6likelihood: High · High
- OS Command InjectionCAPEC-88likelihood: High · High
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/archive/1/542103/100/0/threaded
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-9276
Vendor advisories and official records. Exploit/PoC links are deliberately left out.