Microsoft fixes exploited Outlook attack in massive patch release

Daily Cyber News: Microsoft fixes exploited Outlook attack in massive patch release

Organizations face an actively exploited Outlook credential-theft path within a record-breaking Microsoft update covering one thousand two hundred thirty five flaws. A malicious message file must be opened. Outlook can then connect to an attacker-controlled location without showing its usual external-content warning and expose an NTLM authentication hash.

Key context: The size of the update creates a difficult prioritization problem for large Windows estates.

Additional detail: Patch the exploited Outlook issue first, then accelerate testing and deployment for exposed network services and high-value systems.

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Topics: cybersecurity news, cybersecurity, cyber risk, remote code execution, windows, Microsoft, fixes, exploited, Outlook, attack.