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CVE-2025-64691VulnerabilityPublished

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

Affects AVEVA Process OptimizationSource CVE Database V5

0

Not known to be exploited · CVSS 8.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 21% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Jan 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
AVEVAProcess OptimizationAffected
  • <=2024.1
Fixed in–

AI-suggested

1. Restrict access to AVEVA Process Optimization systems strictly to authorized personnel with a need-to-know basis, minimizing the number of users with standard OS-level privileges. 2. Implement robust authentication mechanisms, including multi-factor authentication, to reduce the risk of credential compromise. 3. Monitor and audit TCL Macro script files for unauthorized changes or tampering, employing file integrity monitoring solutions tailored to these scripts. 4. Apply network segmentation to isolate the model application servers from less trusted network zones, limiting lateral movement opportunities. 5. Employ application whitelisting to prevent unauthorized execution or modification of TCL scripts. 6. Regularly review and harden operating system security configurations on servers hosting AVEVA Process Optimization. 7. Engage with AVEVA for timely updates and patches; until patches are available, consider temporary disabling or restricting TCL Macro functionality if feasible. 8. Conduct user training to raise awareness about the risks of privilege escalation and the importance of safeguarding credentials. 9. Prepare incident response plans specifically addressing potential exploitation scenarios involving AVEVA Process Optimization. 10. Utilize endpoint detection and response (EDR) tools to detect anomalous behaviors indicative of privilege escalation or script tampering.

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.

References

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