CVE-2025-64769

High

Published: 16 January 2026

Published

16 January 2026

Modified

22 January 2026

KEV Added

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Patch

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CVSS Score v4 7.6 CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Score 0.0001 0.7th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-64769 is a high-severity Cleartext Transmission of Sensitive Information (CWE-319) vulnerability in Aveva Process Optimization. Its CVSS base score is 7.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Network Sniffing (T1040); ranked at the 0.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SC-13 (Cryptographic Protection) and SC-8 (Transmission Confidentiality and Integrity).

Deeper analysis

CVE-2025-64769 is a vulnerability in the Process Optimization application suite, where connection channels and protocols are not encrypted by default. This exposes communications to potential hijacking or data leakage in man-in-the-middle attacks or passive inspection scenarios. The issue is rated with a CVSS v3.1 base score of 7.1 (AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L) and is associated with CWE-319 (Cleartext Transmission of Sensitive Information).

The vulnerability can be exploited by unauthenticated attackers (PR:N) with adjacent network access (AV:A), though it requires high attack complexity (AC:H) and no user interaction (UI:N). Successful exploitation allows high-impact confidentiality and integrity violations, such as data interception or modification, alongside low availability impact (A:L), all within unchanged scope (S:U).

Advisories including CISA's ICSA-26-015-01 and AVEVA's software support and cyber-security updates provide details on mitigations and patches; practitioners should consult https://www.cisa.gov/news-events/ics-advisories/icsa-26-015-01, https://softwaresupportsp.aveva.com/en-US/downloads/products/details/a643eaa3-0d85-4fde-ac11-5239e87a68ea, and https://www.aveva.com/en/support-and-success/cyber-security-updates/ for remediation guidance.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2026-2989

Vulnerability details

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.

CWE(s): CWE-319

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1040 Network Sniffing Credential Access

Adversaries may passively sniff network traffic to capture information about an environment, including authentication material passed over the network.

attack.mitre.org →

T1557 Adversary-in-the-Middle Credential Access

Adversaries may attempt to position themselves between two or more networked devices using an adversary-in-the-middle (AiTM) technique to support follow-on behaviors such as [Network Sniffing](https://attack.

attack.mitre.org →

Why these techniques?

Unencrypted channels (CWE-319) directly enable passive network sniffing (T1040) and active MITM interception/modification (T1557) on adjacent networks.

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1