Microsoft Windows Buffer Overflow Vulnerability (CVE-2008-4250)
Severity: critical · Patch status: patched · Since 2026-05-20 · CVE-2008-4250
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. CISA added CVE-2008-4250 to its Known Exploited Vulnerabilities catalog on May 20, 2026, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 3, 2026 (BOD 22-01); treat that as the outer limit.
Sources
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