Vulnerability record

CVE-2008-4250

Microsoft Windows Buffer Overflow Vulnerability

CriticalExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Windows, fix it now.

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.

US federal civilian agencies must remediate by Jun 3, 2026.

Patch status

Official fix available since Sep 29, 2026

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

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."

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Source
Windows	Microsoft	KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 29, 2026
CVE-2008-4250 scored CVSS 9.8: Microsoft Windows, Microsoft Windows Buffer Overflow Vulnerability
CISA lists this as exploited in the wild. Unpatched Windows systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
Patch releasedUpdateKEVSep 29, 2026
Patch released for CVE-2008-4250: Microsoft Windows, Microsoft Windows Buffer Overflow Vulnerability
An official fix is now available for Microsoft Windows. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

learn.microsoft.com https://learn.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-067
nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2008-4250
blogs.securiteam.com http://blogs.securiteam.com/index.php/archives/1150
marc.info http://marc.info/?l=bugtraq&m=122703006921213&w=2
secunia.com http://secunia.com/advisories/32326
kb.cert.org http://www.kb.cert.org/vuls/id/827267
securityfocus.com http://www.securityfocus.com/archive/1/497808/100/0/threaded
securityfocus.com http://www.securityfocus.com/archive/1/497816/100/0/threaded
securityfocus.com http://www.securityfocus.com/bid/31874
securitytracker.com http://www.securitytracker.com/id?1021091
us-cert.gov http://www.us-cert.gov/cas/techalerts/TA08-297A.html
us-cert.gov http://www.us-cert.gov/cas/techalerts/TA09-088A.html
vupen.com http://www.vupen.com/english/advisories/2008/2902
docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-067
exchange.xforce.ibmcloud.com https://exchange.xforce.ibmcloud.com/vulnerabilities/46040
oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6093
exploit-db.com https://www.exploit-db.com/exploits/6824
exploit-db.com https://www.exploit-db.com/exploits/6841
exploit-db.com https://www.exploit-db.com/exploits/7104
exploit-db.com https://www.exploit-db.com/exploits/7132
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2008-4250