A Permissions, Privileges, and Access Controls issue was discovered in OSIsoft PI Web API versions 2017 R2 and prior.

published 2018-03-14 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19229

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.8%; EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

A Permissions, Privileges, and Access Controls issue was discovered in OSIsoft PI Web API versions 2017 R2 and prior. Privileges may be escalated, giving attackers access to the PI System via the service account.

Vendor advisories

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

cisa ICSA-18-072-04 updated 2018-03-13 cvss 9.3

OSIsoft PI Web API

OSIsoft LLC PI Web API <=2017 R2
affected: vendor fix, mitigation “OSIsoft has released the following alert” techsupport.osisoft.com

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

1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a OSIsoft PI Web API

Classification

Weakness

CWE-264 Permissions, Privileges, and Access Controls

References

securityfocus.com /bid/103396
vdb-entry, third-party-advisory
ics-cert.us-cert.gov /advisories/ICSA-18-072-04
mitigation, third-party-advisory, us-government-resource

Sources

CVE List CVE-2018-7500
NVD CVE-2018-7500

Fencer Vulns 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