AVEVA Enterprise SCADA
View CSAF
Summary
Successful exploitation of this vulnerability could allow an attacker to tamper with serialized data, potentially resulting in code execution during deserialization.
The following versions of AVEVA Enterprise SCADA are affected:
Enterprise SCADA 2025 (CVE-2025-7639) Enterprise SCADA >=2024|<=2024_SP1_P01 (CVE-2025-7639) Enterprise SCADA >=2023|<=2023_SP1 (CVE-2025-7639) Enterprise SCADA >=2022|<=2022_SP2_P2 (CVE-2025-7639) Enterprise SCADA <=2021_SP2_P5 (CVE-2025-7639) Enterprise SCADA HMI 2024|2024|R2 (CVE-2025-7639) Enterprise SCADA HMI <=2023_P1 (CVE-2025-7639)
CVSS
Vendor
Equipment
Vulnerabilities
v3 7.1
AVEVA
AVEVA Enterprise SCADA
Deserialization of Untrusted Data
Background
Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: United Kingdom
Vulnerabilities
Expand All +
CVE-2025-7639
The vulnerability, if exploited, could allow an authenticated miscreant with "DNA Authority - Operator" privilege to tamper with serialized data, potentially resulting in code execution during deserialization under the privilege of Enterprise SCADA security group "DNA Apps". View CVE Details
Affected Products
AVEVA Enterprise SCADA
Vendor:AVEVA
Product Version:AVEVA Enterprise SCADA: 2025, AVEVA Enterprise SCADA: >=2024|<=2024_SP1_P01, AVEVA Enterprise SCADA: >=2023|<=2023_SP1, AVEVA Enterprise SCADA: >=2022|<=2022_SP2_P2, AVEVA Enterprise SCADA: <=2021_SP2_P5, AVEVA Enterprise SCADA HMI: 2024|2024_R2, AVEVA Enterprise SCADA HMI: <=2023_P1
Product Status:known_affected
Remediations
MitigationAVEVA recommends that customers using affected product versions should perform the following to mitigate the risk of exploit: 1. Evaluate the impact of these vulnerabilities based on your operational environment, architecture, and product implementation. 2. Plan an upgrade of Servers and Clients to one of the available fixed versions listed in this document. 3. Configure Servers and Clients as described in this document. MitigationContact your AVEVA Technical Support representative, Customer Success Manager, Account Manager, or Solution Integrator to obtain the security update best applicable to the product version currently deployed in your environment: Servers: AVEVA Enterprise SCADA v2025 P1 or higher, AVEVA Enterprise SCADA v2024 SP1 P2, AVEVA Enterprise SCADA v2023 SP1 P1, AVEVA Enterprise SCADA v2022 SP2 P3, AVEVA Enterprise SCADA v2021 SP2 P6, AVEVA Pipeline Operations for Gas/Liquids v2025 P1 or higher, AVEVA Pipeline Operations for Gas/Liquids v2024 SP1 P2, AVEVA Pipeline Operations for Gas/Liquids v2023 SP1 P1, AVEVA Pipeline Operations for Gas/Liquids v2022 SP2 P3, AVEVA Pipeline Operations for Gas/Liquids v2021 SP2 P6 Clients: AVEVA Enterprise SCADA HMI v2024 R2 HF7 or higher, AVEVA Enterprise SCADA HMI v2024 P1, AVEVA Enterprise SCADA HMI v2023 P2 HF1, AVEVA Pipeline Integrity Monitor (delivered on Pipeline Simulation media) v2025 SP1 P2 or higher, AVEVA Pipeline Training Simulator (delivered on Pipeline Simulat
ion media) v2025 SP1 P2 or higher, Measurement Advisor 2025 P1 or higher, Measurement Advisor 2021 SP1 HF16
MitigationTo fully mitigate the risk of exploit, the following configuration changes must be implemented after all server and client nodes have been upgraded to compatible versions that support the fix:Server Components: Change "BinarySerializer" -> "Mode" setting from 'Binary Formatter' to 'Json'. Change "BinarySerializer" -> "AcceptBinaryFormattedData" setting from 'true' to
'false'. Re-cache the XOS Event Handlers assembly
MitigationClient Components: Configure clients/products that interface with Enterprise SCADA to only use JSON serialization. MitigationHMI: Migrate HMI displays MitigationFor step-by-step instructions on where and how to apply these configuration settings, how to migrate HMI displays, compatible server-client versions list, and additional details please refer to KB117814 "AVEVA Midstream Product Bulletin - Removal of Binary Formatter"
https://softwaresupportsp.aveva. com/en-US/knowledge/details/000117814?lang=en_US
MitigationAVEVA recommends the following general defensive measures: Audit devices, network topology, and perimeter defences to ensure all applicable security best practices from AVEVA's Enterprise SCADA Reference System Architecture are adhered to. Audit assigned permissions to ensure that only trusted users are given "DNA Authority - Operator" rights:
https://docs.aveva.com/bundle/scada-ent-2025/page/651008.html Disallow BLT Test clients in production environmentsFor additional details on defensive measures, refer to Section 5 of KB117814 "AVEVA Midstream Product Bulletin - Removal of Binary Formatter
https://docs.aveva.com/bundle/scada-ent-2025/page/651008.html MitigationFor more information on this vulnerability, including security updates, users should see the security bulletin AVEVA-2026-005.
https://www.aveva.com/content/dam/aveva/documents/support/cyber-
security-updates/SecurityBulletin_AVEVA-2026-005.pdf
Relevant CWE: CWE-502 Deserialization of Untrusted Data
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
7.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H
4.0
6.1
MEDIUM
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Acknowledgments
AVEVA reported this vulnerability 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 vulnerability. 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 this vulnerability has been reported to CISA at this time. This vulnerability has a high attack complexity.
Revision History
Initial Release Date: 2026-08-13
Date
Revision
Summary
2026-08-13
1
Initial Republication of AVEVA security bulletin AVEVA-2026-005
Legal Notice and Terms of Use
https://www.cisa.gov/news-events/ics-advisories/icsa-26-225-01
2026-08-13 12:00 UTC
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