Advisories › AVEVA › ICSA-26-225-01
AVEVA Enterprise SCADA: 1 CVE, High 7.1
Summary
CISA reports 1 vulnerability in AVEVA Enterprise SCADA, Enterprise SCADA HMI. Weakness type: Deserialization of Untrusted Data. Successful exploitation of this vulnerability could allow an attacker to tamper with serialized data, potentially resulting in code execution during deserialization. Highest CVSS v3 score: 7.1 (High), exploitable over the network.
What to do: Prioritize: AVEVA recommends that customers using affected product versions should perform the following to mitigate the risk of exploit: 1.
Why this matters for oil & gas: AVEVA (System Platform/Wonderware, PI, InTouch) is widely used for SCADA and historians.
At a glance
- Vendor
- AVEVA
- Products
- Enterprise SCADA, Enterprise SCADA HMI
- CVEs
- CVE-2025-7639
- Highest CVSS v3
- 7.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H
- Highest CVSS v4
- –
- Known exploited (KEV)
- No CVE from this advisory is on the KEV list as of the last refresh
- Sectors (per CISA)
- Critical Manufacturing
- Deployed
- Worldwide
- Vendor HQ
- United Kingdom
Vulnerabilities
| CVE | Weakness | CVSS v3 | CVSS v4 | KEV | Description (from advisory) |
|---|---|---|---|---|---|
| CVE-2025-7639 | Deserialization of Untrusted Data | 7.1 | – | No | 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". |
Affected products (7)
- 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
Vendor fixes and mitigations (from advisory)
- Mitigation: AVEVA 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.
- Mitigation: Contact 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/Li
- Mitigation: To 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
- Mitigation: Client Components: Configure clients/products that interface with Enterprise SCADA to only use JSON serialization.
- Mitigation: HMI: Migrate HMI displays
- Mitigation: For 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" link
- Mitigation: AVEVA 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 link
- Mitigation: For more information on this vulnerability, including security updates, users should see the security bulletin AVEVA-2026-005. link
Also apply CISA's standard ICS practices: minimize network exposure, keep control networks behind firewalls and isolated from business networks, and use up-to-date secure remote access.
Sources
This page is generated automatically from the CISA advisory text. It is not a substitute for the vendor's guidance; verify affected versions and fixes at the source before making changes to control systems.