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

published 2016-06-19 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5505

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-16-166-02 updated 2025-06-09 cvss 6.5

OSIsoft PI AF Server Input Validation Vulnerability

OSIsoft PI AF Server 2016 <=2.8.0
affected: mitigation “They also recommend that access to PI SQL Data Access Server be limited to only those users who need it through user rights assignment security policy.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.21% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:N/A:P

Classification

Weakness

CWE-20 Improper Input Validation

References

techsupport.osisoft.com /Troubleshooting/Alerts/AL00301
vendor-advisory
ics-cert.us-cert.gov /advisories/ICSA-16-166-02
third-party-advisory, us-government-resource

Sources

CVE List CVE-2016-4518
NVD CVE-2016-4518

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary