Vulnerability intelligence
CVE-2008-4250
Microsoft Windows Buffer Overflow Vulnerability
Microsoft Windows
The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, Server 2008, and 7 Pre-Beta allows remote attackers to execute arbitrary code via a crafted RPC request that triggers the overflow during path canonicalization, as exploited in the wild by Gimmiv.A in October 2008, aka "Server Service Vulnerability."
CVSS Score
9.8
Critical
EPSS — Exploit Probability
92%
Riskier than 100% of all CVEs
Exploitation
Confirmed in the wild
Used in ransomware campaigns
Remediation
Patch available
Federal deadline 2026-06-03
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2026-06-03.
4 articles across 3 outlets · first covered May 20, 2026 · latest May 21, 2026
Coverage timeline
-
CISA Adds Critical Flaws in Windows, Office, Defender to KEV Listsecurityaffairs.com · May 21, 2026
-
CISA adds buffer overflow flaw CVE-2008-4250 to KEV cataloguewww.cisa.gov · May 20, 2026
-
CISA Warns of Active Exploit in Windows RPC Flaw CVE-2008-4250cisa.gov · May 20, 2026
-
CISA adds seven KEV flaws, including 2026 Microsoft Defender bugswww.cisa.gov · May 20, 2026