CVE-2009-0562

The Office Web Components ActiveX Control in Microsoft Office XP SP3, Office 2003 SP3, Office XP Web Components SP3, Office 2003 Web Components SP3, Office 2003 Web Components SP1 for the 2007 Microsoft Office System, Internet Security and Acceleration (ISA) Server 2004 SP3 and 2006 SP1, and Office Small Business Accounting 2006 does not properly allocate memory, which allows remote attackers to execute arbitrary code via unspecified vectors that trigger "system state" corruption, aka "Office Web Components Memory Allocation Vulnerability."

Published: 2009-08-12 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0562 is rated High Risk (68.4/100): CVSS Critical severity, with high exploitation likelihood (EPSS 62.22%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-0562

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-28 65.43% 62.22% -3.20%
2 2025-03-30 68.46% 65.43% -3.04%
3 2025-03-29 — 68.46% —

Full EPSS history (28 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0562

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2009-0562

Affected software / configurations for CVE-2009-0562

Vendor Product Version Raw CPE
microsoft isa_server 2004 cpe:2.3:a:microsoft:isa_server:2004:sp3:enterprise:*:*:*:*:*
microsoft isa_server 2004 cpe:2.3:a:microsoft:isa_server:2004:sp3:standard:*:*:*:*:*
microsoft isa_server 2006 cpe:2.3:a:microsoft:isa_server:2006:sp1:enterprise:*:*:*:*:*
microsoft isa_server 2006 cpe:2.3:a:microsoft:isa_server:2006:sp1:standard:*:*:*:*:*
microsoft office — cpe:2.3:a:microsoft:office:-:*:small_business_accounting_2006:*:*:*:*:*
microsoft office 2003 cpe:2.3:a:microsoft:office:2003:sp3:*:*:*:*:*:*
microsoft office xp cpe:2.3:a:microsoft:office:xp:sp3:*:*:*:*:*:*
microsoft office_web_components 2000 cpe:2.3:a:microsoft:office_web_components:2000:sp3:*:*:*:*:*:*
microsoft office_web_components 2003 cpe:2.3:a:microsoft:office_web_components:2003:sp1:2007_microsoft_office:*:*:*:*:*
microsoft office_web_components 2003 cpe:2.3:a:microsoft:office_web_components:2003:sp3:*:*:*:*:*:*
microsoft office_web_components xp cpe:2.3:a:microsoft:office_web_components:xp:sp3:*:*:*:*:*:*

References for CVE-2009-0562

cvelogic Threat Intelligence