What is CVE-2016-4518?

CVE-2016-4518 is a medium-severity vulnerability in Osisoft Pi Af Server 2016, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-06-19.

How severe is CVE-2016-4518?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Osisoft Pi Af Server 2016

CVE-2016-4518

OSIsoft PI AF Server before 2016 2.8.0 allows remote authenticated users to cause a denial of service (service outage) via a message.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2016-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Osisoft Pi Af Server 2016

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

techsupport.osisoft.com/Troubleshooting/Alerts/AL00301 (Vendor Advisory)
ics-cert.us-cert.gov/advisories/ICSA-16-166-02 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2016-4518?: CVE-2016-4518 is a medium-severity vulnerability in Osisoft Pi Af Server 2016, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2016-06-19.
How severe is CVE-2016-4518?: Medium severity. CVSS v3 base score is 6.5 out of 10.