CVE-2025-4417

Browser code execution via stored admin-portal script

Published Jun 12, 2025 · Updated Jun 12, 2025

Stored XSS in AVEVA PI Connector for CygNet 1.6.14 and earlier allows local users to run JavaScript in other users' browsers. AVEVA has not disclosed the affected admin-portal field, page, or missing output-encoding operation, but states that injected code is persisted and rendered by affected pages. Exploitation requires administrator privileges and local portal access, followed by another user visiting an affected page; the script then executes in that visitor's browser context.

CVSS severity6.9
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in AVEVA PI Connector for CygNet 1.6.14 and earlier allows local users to run JavaScript in other users' browsers. AVEVA has not disclosed the affected admin-portal field, page, or missing output-encoding operation, but states that injected code is persisted and rendered by affected pages. Exploitation requires administrator privileges and local portal access, followed by another user visiting an affected page; the script then executes in that visitor's browser context.

The record

CVE
CVE-2025-4417
Published
Jun 12, 2025
Updated
Jun 12, 2025
Vendor
AVEVA
Product
PI Connector for CygNet
Classifications
CWE-79, T1203
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.6.14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

AVEVA · PI Connector for CygNetversion=0 <=1.6.14

Published CVSS scores

6.9ICS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
5.5ICS-CERTCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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