CVE-2008-4250KEV · OVERDUE

Microsoft Windows Buffer Overflow Vulnerability

Critical · published October 23, 2008

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 99.9th percentile for exploit probability.

142
days past CISA
deadline
CVSS v3.1
9.8
EPSS
99%
Percentile
99.9
In the wild
Confirmed
What it is

🚨 A crafted RPC request is all it takes to unleash chaos! This vulnerability in Microsoft Windows systems allows attackers to execute arbitrary code remotely — think of it like a hacker sneaking into your home with a cleverly disguised package. 🔥 Imagine a delivery service that automatically opens every package without checking for labels. The Server Service Vulnerability does just that, allowing malicious instructions to slip through the cracks without a second glance! With this vulnerability in play, remote attackers can execute arbitrary code on affected systems, gaining full control over them. This could lead to data breaches, system crashes, or even further infiltration into your network. The consequences are absolutely devastating!

Put simply

Imagine a delivery service that automatically opens every package without checking for labels. The Server Service Vulnerability does just that, allowing malicious instructions to slip through the cracks without a second glance! This vulnerability arises from a buffer overflow during path canonicalization in the Server service, allowing attackers to send specially crafted RPC requests that exploit this flaw to execute malicious code.

What to do

With this vulnerability in play, remote attackers can execute arbitrary code on affected systems, gaining full control over them. This could lead to data breaches, system crashes, or even further infiltration into your network. The consequences are absolutely devastating! Immediate action is crucial! Ensure all affected systems, including Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, and Server 2008, are updated with the latest security patches. Regularly audit your systems for vulnerabilities and implement strict access controls. 🛡️ You've got this! Stay proactive, patch your systems, and you'll keep those hackers at bay! 💪💡

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.98751 · 99.9th percentile
Published
2008-10-23T21:00Z
KEV added
2026-05-20 · due 2026-06-03
EPSS history
Timeline
  • 20 MAY 00:00Z
    Added to CISA KEV — remediate by Jun 3
    kev
  • 23 OCT 21:00Z
    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…
    cvelistv5