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."
CVE-2009-0562
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 9.3 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:M/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 25.7% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v2.0 (legacy)
- 9.3HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 9.3(low)
- EG Risk
- 62(Track)EG Risk 62/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity93% × 45%Exploitation40% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 26%
- EPSS %ILE
- 98%
- KEV
- Not listed
Published
August 12, 2009
Last Modified
April 23, 2026
References (8)
- secure@microsofthttp://www.securitytracker.com/id?1022708
- secure@microsofthttp://www.us-cert.gov/cas/techalerts/TA09-223A.html
- secure@microsofthttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-043
- secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6337
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id?1022708
- af854a3a-2127-422b-91ae-364da2661108http://www.us-cert.gov/cas/techalerts/TA09-223A.html
- af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-043
- af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6337
Data Freshness Timeline
(refreshed 2× in last 7d / 8× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-27 14:19 UTCEPSS rescore
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- 2026-07-26 13:37 UTCEG score recompute▲ 9.30
- 2026-07-25 14:12 UTCEPSS rescore
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- 2026-07-23 00:58 UTCEG score recompute
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- 2026-07-22 21:42 UTCEG score recompute
- 2026-07-22 14:03 UTCEPSS rescore
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- 2026-05-31 00:13 UTCEPSS rescore
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- 2026-05-30 15:50 UTCEG score recompute
- 2026-05-30 15:50 UTCGHSA enrichment
- 2026-05-29 13:40 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
Frequently asked(4)
What is CVE-2009-0562?
When was CVE-2009-0562 disclosed?
Is CVE-2009-0562 actively exploited?
How do I remediate CVE-2009-0562?
Dependency Blast Radius
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