CVE-2026-50571 Log Hunting Ansible playbook

Duane_Toler — Sat, 13 Jun 2026 01:23:37 GMT

This is a complete Ansible playbook with Jinja template to query your management server(s) to hunt for attackers and exploit attempts for CVE-2025-50571. Log results are saved to a CSV file to send to your InfoSec group or other relevant teams.

This is based on the contents of Check Point's Auth Bypass Detection Guide (https://sc1.checkpoint.com/documents/PDF/AuthBypassDetectionGuide.pdf) and the suggested log query from sk185033 (https://support.checkpoint.com/results/sk/sk185033).

How To Get It

You can clone the repo to get the playbook, the template, and the sample inventory:

git clone https://github.com/Webfargo/ansible-playbooks-check_point.git

Edit the sample inventory file (inventory/inventory.yml) and set the IP address of your management server. If you have an MDS server, then set the leading IP of your MDS server, uncomment the ansible_checkpoint_domain line, and enter the name of your management domain.

Recommended: Be sure you have an administrator with API key authentication. The README shows how to encrypt the API key string to save in the inventory file.

Alternatively, if you already have an inventory, you can download just the playbook the template directly:

https://github.com/Webfargo/ansible-playbooks-check_point/tree/main/CVE-2026-50751

https://github.com/Webfargo/ansible-playbooks-check_point/tree/main/CVE-2026-50751/templates

In this case, since you already have an inventory, you already know how to use it. 🙂 Read the README for some optional parameters.

How To Run It

ansible-playbook -i inventory/ CVE-2026-50751.yml --ask-vault-pass

Enter the ansible-vault password you used and you're done! You will have a new CSV file in a directory named CVE-2025-50571/<name of your mgmt server>/.

Sample CSV Output

Here is what the CSV will look like. The last column, "Exploited", will show positive exploit attempts (where "Quick Mode" was established) .

"Date Time","Gateway","Action","Source","Destination","IKE Message","Exploited" '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-27 08:44:49',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:50',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:29',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:29',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:28',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:28',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:53:28',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:51:20',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:51:20',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: invalid cookie',No '2026-05-22 06:51:20',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: invalid cookie',No '2026-05-22 06:51:20',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: invalid cookie',No '2026-05-22 06:50:42',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:50:42',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:50:42',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:50:42',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: invalid payload type',No '2026-05-22 06:50:41',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No '2026-05-22 06:50:41',cpgw01,'Key Install',192.0.2.2,38.60.157.139,'Main Mode Sent Notification to Peer: payload malformed',No

To query for exploit-only logs, run the playbook with the parameter "-e exploit_only=true".

Optional debug is available with the "-e debug=true" parameter.

topic CVE-2026-50571 Log Hunting Ansible playbook in Automation and APIs

CVE-2026-50571 Log Hunting Ansible playbook