CISA-confirmed known exploited vulnerability

CVE-2008-4250

Microsoft Windows Buffer Overflow Vulnerability

Microsoft · Windows

Vulnerability details

Microsoft Windows contains a buffer overflow vulnerability in the Windows Server Service that allows remote attackers to execute arbitrary code via a crafted RPC request that triggers an overflow during path canonicalization.

Added to CISA KEV: 2026-05-20

Ransomware campaign use: Unknown

CISA due date: 2026-06-03

Defensive guidance from CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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