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CVE-2008-4250

Microsoft Windows Buffer Overflow

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 98.8%
  1. Published23 Oct 2008
  2. Added to CISA KEV20 May 2026
  3. Remediation due3 Jun 2026
Actively exploited (CISA KEV)

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 KEV: 20 May 2026Federal remediation due: 3 Jun 2026

Description

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 2000all versions
Microsoft Windows Server 2003all versions
Microsoft Windows Server 2008all versions
Microsoft Windows Vistaall versions
Microsoft Windows Xpall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

and 9 more references

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Frequently asked

Is CVE-2008-4250 being actively exploited?

Yes. CVE-2008-4250 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 20 May 2026.

How severe is CVE-2008-4250?

CVE-2008-4250 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 98.8% probability of exploitation.

Which products are affected by CVE-2008-4250?

Affected products include Microsoft Windows 2000, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows Xp.

How do I fix CVE-2008-4250?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2008-4250 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.