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Microsoft Addresses ksmbd Vulnerabilities CVE-2025-22042 and CVE-2025-22043

First seen 18 Feb 2026, 12:23 UTC • •

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ThreatCluster •March 12, 2026 at 16:10 UTC

Microsoft has published information regarding two vulnerabilities in ksmbd: CVE-2025-22042 and CVE-2025-22043. Both vulnerabilities were published on April 16, 2025, and involve adding bounds checks for lease and durable handle contexts, respectively, affecting systems utilizing ksmbd.

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Timeline

2025-04-16
CVE-2025-22042 and CVE-2025-22043 published
2026-02-18
Microsoft publishes information on CVE-2025-22042 and CVE-2025-22043

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