01—Abstract
Summary
Summary of the 8-K filed September 24, 2025. Cited figures are marked; the original filing is the authoritative source.
RTX Corporation has disclosed a product cybersecurity incident involving ransomware affecting its Multi-User System Environment (MUSE) passenger processing software.
The MUSE software, used by airlines for check-in and gate operations including baggage handling, operates on customer-specific networks outside of RTX's enterprise network. While RTX has activated its incident response plan, engaged cybersecurity experts, and notified authorities, the investigation is ongoing. The company is working with affected airlines and airports, which have implemented backup or manual processes, leading to some flight delays and cancellations.
Importantly, RTX states that, at this time, the incident has not had a material impact and is not reasonably expected to have a material impact on its financial condition, business operations, or results. However, the company also cautions that the full extent of the incident is still being assessed, and potential risks include ongoing investigation findings, customer relationships, regulatory inquiries, litigation, and remediation costs. Investors should monitor further updates on the investigation and any potential financial or operational repercussions.
02—Key points
Key Highlights
- RTX Corp experienced a product cybersecurity incident involving ransomware on its MUSE passenger processing software.
- The affected MUSE software operates on customer-specific airport networks, not RTX's internal enterprise network.
- RTX has initiated its incident response plan, is working with cybersecurity experts, and has notified law enforcement and government agencies.
- Affected airlines and airports have transitioned to backup or manual processes, resulting in some flight delays and cancellations.
- RTX currently states the incident has not had and is not expected to have a material impact on its financial condition or operations.
- The company acknowledges the ongoing investigation and potential for further impacts, including legal, reputational, and financial risks.
- RTX is communicating with customers and providing technical support and guidance.
03—Questions
Frequently Asked Questions
What is the MUSE software and how was it affected?
MUSE (Multi-User System Environment) is passenger processing software that enables multiple airlines to share airport resources like check-in counters and gate areas, including baggage handling systems. The incident involved ransomware affecting this software, which operates on customer-specific networks outside of RTX's main enterprise network.
What has been the immediate impact of the cybersecurity incident?
Affected airlines and airports have switched to backup or manual operational processes. This transition has led to some flight delays and cancellations. RTX is actively providing technical support and guidance to its customers.
Has the incident had a material financial impact on RTX?
According to the filing, RTX states that the incident has not had a material impact and is not reasonably expected to have a material impact on the company's financial condition, business operations, or results of operations at this time. However, they are still assessing the full scope.
What are the potential future risks for RTX related to this incident?
RTX cautions that future risks could include new information discovered during the ongoing investigation, impacts on customer, employee, and regulator relationships, legal and reputational damage, potential regulatory inquiries and litigation, and costs associated with investigation and remediation.
04—Continue