CVE-2025-64691
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-16

Last updated on: 2026-01-16

Assigner: ICS-CERT

Description
The vulnerability, if exploited, could allow an authenticated miscreant (OS standard user) to tamper with TCL Macro scripts and escalate privileges to OS system, potentially resulting in complete compromise of the model application server.
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Meta Information
Published
2026-01-16
Last Modified
2026-01-16
Generated
2026-06-16
AI Q&A
2026-01-16
EPSS Evaluated
2026-06-15
NVD
CVE-2025-64691
EUVD
EUVD-2026-2994
Affected Vendors & Products
Showing 14 associated CPEs
Vendor Product Version / Range
aveva pi_integrator_for_business_analytics to 2020_r2_sp1 (exc)
aveva pi_web_api *
aveva pi_connector_for_cygnet *
aveva pi_data_archive *
aveva suitelink_server *
aveva historian_server *
aveva pi_af_client *
aveva edge *
aveva pi_server *
aveva operations_control_logger *
aveva plant_scada *
aveva telemetry_server *
aveva in_touch_access_anywhere *
aveva system_platform *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Executive Summary

This vulnerability allows an authenticated user with standard OS privileges to tamper with TCL Macro scripts and escalate their privileges to the OS system level. This escalation can potentially lead to a complete compromise of the model application server.

Impact Analysis

If exploited, this vulnerability can lead to a complete compromise of the model application server by allowing privilege escalation from a standard user to system-level access. This could result in unauthorized control over the server and its operations.

Mitigation Strategies

Apply the latest security updates and patches provided by AVEVA for the affected products to mitigate this vulnerability. Ensure that only authenticated users have access to the system and monitor for any unauthorized tampering with TCL Macro scripts. Follow AVEVA's security bulletins and advisories for detailed mitigation instructions. [1]

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