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Industrial control advisorySeverity 7.3 high
Rockwell Automation ControlFLASH
ICSA-26-246-03 · CISA · September 3, 2026
Summary
Successful exploitation of this vulnerability could give an attacker the ability to run any commands or code of the attacker's choice on a target machine at the logged-in user's permission level.
From CISA, quoted as published. Check the source before acting.
What to do
Rockwell Automation has corrected this issue in software version 15.08, and encourages all users to update to the newest version.
Users of the affected software who are not able to upgrade to one of thecorrected versions should implement the following mitigation: To protect the files, do the following steps to remove the Everyone group:
1. Right-click the C:\Program Files (x86)\ControlFLASH\0001 folder, and then select Properties.
2. In the 0001 Properties dialog, select the Security tab, and then select Edit.
3. In the Permissions for 0001 dialog, in Group or user names, select Everyone, and then select Remove.
4. Select OK.
If the mitigation above cannot be implemented, Rockwell Automation recommends following their security best practices.
For more information on this issue, see the Rockwell Automation security advisory at: https://www.rockwellautomation.com/en-us/trust-center/security-advisories.html
Vendor fix or mitigation, quoted from the advisory.
Each CVE in this advisory
| CVE | Severity | Known exploited | Exploit likelihood |
|---|---|---|---|
| CVE-2026-12663 | 7.3 high | No | 0.2% |
Severity from the advisory (CVSS), known exploitation from CISA's catalog, exploit likelihood from EPSS (next 30 days).
Affected products
| Vendor | Product |
|---|---|
| Rockwell Automation | ControlFLASH |
Why it's on these mode pages
- Maritime: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Rockwell Automation (industrial control makers used in every mode, all modes) (matched by rule)
Change history
- September 3, 2026: Initial Republication of Rockwell Automation security advisory.
- November 9, 2026: First collected by Watch
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