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ExploitedIn CISA KEVFix available

CVE-2018-9276

Exploitation confirmed. First attested on 2025-02-04 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2018-07-02
  • Fixed in21.2.68 · 18.2.39
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-07-0216:29CVE publishedNVD
  2. 2019-03-11Exploit-DB entryExploit-DB
  3. 2025-02-04Added to the CISA KEV catalogCISA KEV
  4. 2025-02-04Listed as exploited by GCVEGCVE
  5. 2025-02-04Exploitation first reportedCISA KEV
  6. 2025-02-0415:48SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-9276?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-9276?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Paessler prtg network monitor
BranchAffectedFixed in
21.2> 19.3.52, < 21.2.6821.2.68
18.2< 18.2.3918.2.39

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2018-9276 Red Hat Product Security

    PRTG Network Monitor: PRTG Network Monitor OS Command Injection Vulnerability

Full record on NVD

Fix

  1. Update Paessler prtg network monitor to 21.2.68 · 18.2.39
  2. CISA’s required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.due 2025-02-25

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-46527
Exploit-DB
Proof-of-concept repositories
5 repositories, unverifiedwildkindcc/CVE-2018-9276andyfeili/CVE-2018-9276alvinsmith-eroad/CVE-2018-9276AC8999/PRTG-Network-Monitor-18.2.38---Authenticated-Remote-Code-Execution-CVE-2018-9276BardLaudian/CVE-2018-9276
PoC-in-GitHub
Metasploit modules
1 moduleexploit/windows/http/prtg_authenticated_rcerank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-02-04
Patch Due Date
2025-02-25
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2018-07-02
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-cjqq-8xv6-575p

Frequently asked questions

What is CVE-2018-9276?

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.

Is CVE-2018-9276 actively exploited?

Yes. CVE-2018-9276 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-02-25.

What is the CVSS score for CVE-2018-9276?

CVE-2018-9276 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record