CVE-2025-4418

Service hang via tampered cache and buffer files

Published Jun 12, 2025 · Updated Jun 12, 2025

Improper integrity validation in AVEVA PI Connector for CygNet 1.6.14 and earlier allows local users to make its service unresponsive. The connector accepts locally modified cache and buffer files without adequately validating their integrity, then becomes unresponsive while processing them. Exploitation requires elevated local privileges, and the documented consequence is an availability loss limited to the connector service.

CVSS severity6.7
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper integrity validation in AVEVA PI Connector for CygNet 1.6.14 and earlier allows local users to make its service unresponsive. The connector accepts locally modified cache and buffer files without adequately validating their integrity, then becomes unresponsive while processing them. Exploitation requires elevated local privileges, and the documented consequence is an availability loss limited to the connector service.

The record

CVE
CVE-2025-4418
Published
Jun 12, 2025
Updated
Jun 12, 2025
Vendor
AVEVA
Product
PI Connector for CygNet
Classifications
CWE-354, T1499
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

6.7ICS-CERTCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4ICS-CERTCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

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.

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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-354Improper Validation of Integrity Check Value
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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