AVEVA Enterprise SCADA: Deserialization of Untrusted Data
CVE-2025-7639 is a high-severity deserialization of untrusted data vulnerability in AVEVA Enterprise SCADA from AVEVA, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected AVEVA Enterprise SCADA versions: 2025; 2024 through 2024 SP1 P01; 2023 through 2023 SP1, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.57% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of AVEVA Enterprise SCADA you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| AVEVA | AVEVA Enterprise SCADA | 2025; 2024 through 2024 SP1 P01; 2023 through 2023 SP1; 2022 through 2022 SP2 P2; 2021 SP2 P5 and earlier | Not stated |
| AVEVA | AVEVA Enterprise SCADA HMI | 2024; 2023_P1 and earlier; 2024 R2 | Not stated |
| AVEVA | AVEVA Pipeline Operations for Gas/Liquids | Not specified in the record | Not stated |
| AVEVA | AVEVA Pipeline Integrity Monitor (delivered on Pipeline Simulation media) | Not specified in the record | Not stated |
| AVEVA | AVEVA Pipeline Training Simulator (delivered on Pipeline Simulation media) | Not specified in the record | Not stated |
| AVEVA | Measurement Advisor | Not specified in the record | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- LowSome restricted data can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:H. Scored by CNA (hq.dhs.gov).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 6.1 | Medium | CNA (hq.dhs.gov) |
| CVSS 3.1 | 7.1 | High | CNA (hq.dhs.gov) |
Official description
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".
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
How developers prevent this class of flaw
- If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
- When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
- Explicitly define a final object() to prevent deserialization.
More Deserialization of Untrusted Data vulnerabilities (CWE-502)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other references
Recent Deserialization of Untrusted Data vulnerabilities
- 7.2 High severity
- 7.8 High severity
- 8.8 High severity
- 7.3 High severity
- 8.8 High severity
- 8.4 High severity
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