How severe is CVE-2018-19203?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Paessler Prtg Network Monitor

CVE-2018-19203

PRTG Network Monitor before 18.2.41.1652 allows remote unauthenticated attackers to terminate the PRTG Core Server Service via a special HTTP request.

Published 2018-11-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.028 (86.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

Paessler Prtg Network Monitor

References

www.ptsecurity.com/ww-en/analytics/threatscape/pt-2018-22/ (Third Party Advisory)
www.paessler.com/prtg/history/stable (Vendor Advisory)
en.securitylab.ru/lab/PT-2018-22 (Third Party Advisory)

Frequently asked questions

What is CVE-2018-19203?: CVE-2018-19203 is a high-severity vulnerability in Paessler Prtg Network Monitor. CVSS score: 7.5/10. Published 2018-11-12.
How severe is CVE-2018-19203?: High severity. CVSS v3 base score is 7.5 out of 10.