Max-severity Exchange server flaw under active exploitation by Kremlin hackers

Ars Technica AI·July 30, 2026·1 min read

AI Summary

A severe vulnerability in Exchange Server is being actively exploited by hackers linked to the Kremlin. Exploiting this flaw can provide persistent access to servers, even after credential changes or disk re-imaging.

From the source

Exploits can give persistent server access that survives credential rotation and disk re-imaging.

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