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CVE-2009-1929

40
FAUCET Score

CVE-2009-1929 describes a critical heap-based buffer overflow vulnerability in the Microsoft Terminal Services Client ActiveX control, affecting various Windows operating systems including XP, Vista, and Server 2008. This flaw allows unauthenticated remote attackers to execute arbitrary code on a vulnerable system by manipulating unspecified parameters within unknown methods. With a CVSS score of 9.3, it presents a high risk due to its network-based attack vector, medium attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its severity and high EPSS score, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
sp2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:sp2:*:*:*:*:*:*:*
sp2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:sp2:*:itanium:*:*:*:*:*
sp2CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2003_server:sp2:*:x64:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:*:*:itanium:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_server_2008:*:sp2:x64:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
34.53%
Probability of exploitation in next 30 days
EPSS Percentile
98.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.3453 is in the 95th percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 56912
docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-044
secunia.com / advisories/36229
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6329
securityfocus.com / bid/35973
Patch
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-223A.html
US Government Resource
vupen.com / english/advisories/2009/2238
PatchVendor Advisory