PI System Connector 2.5.5 release notes

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Last UpdatedFeb 09, 2026
2 minute read

PI System Connector 2.5.5, released February 2026, is a patch release addressing minor bug fixes.

For more information on product features and functions, including:

Prerequisites and system requirements
Installation/uninstallation instructions

refer to PI System Connector.

The latest information about the 2.5.5 release is available online on the AVEVA Documentation Portal.

New features and enhancements

There are no new features or enhancements in this release.

Resolved issues

Work Items	Description
126596	When the PI System Connector is restarted after replicating points on the destination, the final value replicated before the restart is duplicated.

Known issues

Work Items	Description
44723	When the PI System Connector is restarted or when PI Tags are newly added for data collection, the connector performs history recovery to retrieve events. Under certain conditions, the connector can resend a previously archived snapshot value to the destination PI Data Archive due to an overlap between history backfill and real-time data pipe updates See Knowledge Article 000100095 for additional information.
95026	The PI System Connector User Interface does not always update after the final History Recovery status is sent. Workaround: Refresh the browser to view the correct information.
123575	When a database is initially imported, new reference types are created and the connector is receiving individual creation events that prompt correct reference types to be created and populated with a corresponding allowed parent template. A separate update event to a reference type follows a few moments later, which results in allowed parent template fields to be switched. Workaround: Modify any field on the source template. The connector will resync the values.

Work Items

Description

44723

When the PI System Connector is restarted or when PI Tags are newly added for data collection, the connector performs history recovery to retrieve events. Under certain conditions, the connector can resend a previously archived snapshot value to the destination PI Data Archive due to an overlap between history backfill and real-time data pipe updates

See Knowledge Article 000100095 for additional information.

95026

The PI System Connector User Interface does not always update after the final History Recovery status is sent.

Workaround: Refresh the browser to view the correct information.

123575

When a database is initially imported, new reference types are created and the connector is receiving individual creation events that prompt correct reference types to be created and populated with a corresponding allowed parent template. A separate update event to a reference type follows a few moments later, which results in allowed parent template fields to be switched.

Workaround: Modify any field on the source template. The connector will resync the values.

Security information and guidance

We are committed to releasing secure products. This section is intended to provide relevant security-related information to guide your installation or upgrade decision.

We proactively disclose aggregate information about the number and severity of security vulnerabilities addressed in each release. The tables below provide an overview of security issues addressed and their relative severity based on standard scoring.

Overview of new vulnerabilities - Fixed or Mitigated

This section is intended to provide relevant security-related information to guide your installation or upgrade decision. AVEVA is proactively disclosing aggregate information about the number and severity of PI System Connector security vulnerabilities that are fixed in this release.

For this release of PI System Connector, the following vulnerabilities have been fixed or mitigated.

Security vulnerabilities fixed in PI System Connector 2.5.5 release

Severity Category	CVSS Base Score Range	Number of Fixed Vulnerabilities
Critical	9 - 10	0
High	7.0 - 8.9	0
Medium	4.0 - 6.9	0
Low	0 - 3.9	0

Vulnerability mitigations in PI System Connector 2.5.5 release

Component	Version	CVE or Reference	CVSS	Mitigation
Angular	6.1.10	CVE-2021-4231	8.1	Vulnerable code is not in execution path.
ag-grid	12.0.2	CVE-2024-38996	8.8	Vulnerable code cannot be controlled by adversary.
ag-grid	12.0.2	CVE-2024-39001	7.3	Vulnerable code cannot be controlled by adversary.
ag-grid	12.0.2	CVE-2017-16009	6.1	Vulnerable code is not in execution path.
ag-grid	12.0.2	BDSA-2016-1698	5.6	Vulnerable code is not in execution path.

Distribution Kit Files

Product	Software Version
Microsoft .NET Framework	4.8
Microsoft Visual C++ 2019 Redistributable (x86)	14.40.33810
Microsoft Visual C++ 2019 Redistributable (x64)	14.40.33810
PI AF Client 2024	3.1.0.1156
PI System Connector	2.5.5