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I'm no expert but so much of Windows is implemented as services. svchost.exe is probably involved somehow. Like it wouldn't surprise me if Copilot is implemented as a service and it talks to Paint via IPC messages or something
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But that alone wouldn't make the service listen on the network, even if it were the case.
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It would make sense that it could listen for messages like "your generated image is ready!" and pass bitmap data to Paint. And media like images are a common source of vulnerabilities since you're basically passing binary data into the software.
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