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CVE-2009-2496

39
FAUCET Score

CVE-2009-2496 is a critical heap-based buffer overflow vulnerability in the Office Web Components ActiveX Control, affecting various Microsoft Office and server products including Office XP, Office 2003, ISA Server, and Office Small Business Accounting. This flaw allows remote attackers to execute arbitrary code on a vulnerable system. With a CVSS score of 9.3, it presents a high severity risk due to its network-based attack vector, medium attack complexity, and complete compromise of confidentiality, integrity, and availability. Despite its age and high EPSS score, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2002CPE matchmatch criteria
cpe:2.3:a:microsoft:biztalk_server:2002:*:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2004:sp3:enterprise:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2004:sp3:standard:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2006:sp1:enterprise:*:*:*:*:*
2006CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_security_and_acceleration_server:2006:sp1:std:*:*:*:*:*

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
29.46%
Probability of exploitation in next 30 days
EPSS Percentile
98.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.2946 is in the 93rd percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-043
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5645
securitytracker.com / id
us-cert.gov / cas/techalerts/TA09-223A.html
US Government Resource