View CSAF
Summary
Successful exploitation of these vulnerabilities could enable an attacker to execute remote code, perform SQL injection, escalate privileges, or access sensitive information.
The following versions of AVEVA Process Optimization are affected:
- Process Optimization (CVE-2025-61937, CVE-2025-64691, CVE-2025-61943, CVE-2025-65118, CVE-2025-64729, CVE-2025-65117, CVE-2025-64769)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 10 | AVEVA | AVEVA Process Optimization | Improper Control of Generation of Code (‘Code Injection’), Improper Neutralization of Special Elements used in an SQL Command (‘SQL Injection’), Uncontrolled Search Path Element, Missing Authorization, Use of Potentially Dangerous Function, Cleartext Transmission of Sensitive Information |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: United Kingdom
Vulnerabilities
Expand All +
CVE-2025-61937
The vulnerability, if exploited, could allow an unauthenticated miscreant to achieve remote code execution under OS System privileges of “taoimr” service, potentially resulting in complete compromise of the Model Application Server.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-94 Improper Control of Generation of Code (‘Code Injection’)
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 10 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
CVE-2025-64691
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.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-94 Improper Control of Generation of Code (‘Code Injection’)
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 8.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
CVE-2025-61943
The vulnerability, if exploited, could allow an authenticated miscreant (Process Optimization Standard User) to tamper with queries in Captive Historian and achieve code execution under SQL Server administrative privileges, potentially resulting in complete compromise of the SQL Server.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-89 Improper Neutralization of Special Elements used in an SQL Command (‘SQL Injection’)
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 8.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
CVE-2025-65118
The vulnerability, if exploited, could allow an authenticated miscreant (OS Standard User) to trick Process Optimization services into loading arbitrary code and escalate privileges to OS System, potentially resulting in complete compromise of the Model Application Server.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-427 Uncontrolled Search Path Element
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 8.8 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
CVE-2025-64729
The vulnerability, if exploited, could allow an authenticated miscreant (OS Standard User) to tamper with Process Optimization project files, embed code, and escalate their privileges to the identity of a victim user who subsequently interacts with the project files.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-862 Missing Authorization
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 8.1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L |
CVE-2025-65117
The vulnerability, if exploited, could allow an authenticated miscreant (Process Optimization Designer User) to embed OLE objects into graphics, and escalate their privileges to the identity of a victim user who subsequently interacts with the graphical elements.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-676 Use of Potentially Dangerous Function
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N |
CVE-2025-64769
The Process Optimization application suite leverages connection channels/protocols that by-default are not encrypted and could become subject to hijacking or data leakage in certain man-in-the-Middle or passive inspection scenarios.
View CVE Details
Affected Products
AVEVA Process Optimization
AVEVA
AVEVA Process Optimization: <=2024.1
known_affected
Remediations
Mitigation
AVEVA recommends users take the following action:
Vendor fix
Update to AVEVA Process Optimization v2025
Mitigation
AVEVA alternatively recommends the following actions users can take to mitigate risk:
Vendor fix
Apply Host and/or Network firewall rules restricting the taoimr service to accept traffic only from trusted source(s). By default, AVEVA Process Optimization listens on port 8888/8889(TLS). Please refer to the AVEVA Process Optimization Installation Guide for additional details on ports configuration.
Mitigation
Apply ACLs to the installation and data folders, limiting write-access to trusted users only.
Vendor fix
Maintain a trusted chain-of-custody on Process Optimization project files during creation, modification, distribution, backups, and use.
Mitigation
For more information, please Aveva’s security bulletin AVEVA-2026-001.
Relevant CWE: CWE-319 Cleartext Transmission of Sensitive Information
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.1 | HIGH | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |
Acknowledgments
- Christopher Wu of Veracode reported these vulnerabilities to AVEVA
- AVEVA reported these vulnerabilities to CISA
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this (these) vulnerability(ies), such as:
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Do not click web links or open attachments in unsolicited email messages.
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-01-15
| Date | Revision | Summary |
|---|---|---|
| 2026-01-15 | 1 | Initial Republication of AVEVA-2026-001 |