AVEVA PI Connector for CygNet Cross-site Scripting

published 2025-06-12 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-18216

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

A cross-site scripting vulnerability exists in AVEVA PI Connector for CygNet Versions 1.6.14 and prior that, if exploited, could allow an administrator miscreant with local access to the connector admin portal to persist arbitrary JavaScript code that will be executed by other users who visit affected pages.

Vendor advisories

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

cisa ICSA-25-162-09 updated 2025-06-12 cvss 5.5

AVEVA PI Connector for CygNet

AVEVA PI Connector for CygNet <=1.6.14
affected: vendor fix, mitigation “AVEVA further recommends users follow general defensive measures:” my.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

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 16 mo ago (2025-06-12)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N
CNA	4.0	6.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
CNA	4.0	6.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

AVEVA PI Connector for CygNet

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

CVE List CVE-2025-4417
NVD CVE-2025-4417

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