Post #4035461
2026-07-23 12:07 UTC
Obviously, popping calc.exe is something only a person like me would do.
A real attacker would probably use this to steal your server's machineKey. With this, an attacker retains control of your web server, indefinitely. (Even after patches are installed, and even if you did any sort of clean-up short of rotating the machineKey value.
Because they care about security, Microsoft has provided optional guidance for performing machineKey rotation. You should probably do this.
Replies (1)
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@wdormann@infosec.exchange 2026-07-23 12:14
It's also important to remember that the Exploitability section of any given MSRC security update is reflective of the state of the world AT PUBLICATION TIME. That is, the Publicly disclosed and Exploited values reflect the world last week. Not today. It's in the KEV due to active exploitation.