CVE-2009-1534

What it is

Buffer overflow in the Office Web Components ActiveX Control in Microsoft Office XP SP3, Office 2000 Web Components SP3, Office XP Web Components SP3, BizTalk Server 2002, and Visual Studio .NET 2003 SP1 allows remote attackers to execute arbitrary code via crafted property values, aka "Office Web Components Buffer Overflow Vulnerability."

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

51.6% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2009-05-05 00:00 UTC ReservedThe CVE id was reserved by its CNA
2. 2009-08-12 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-06-16 23:07 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 51.6% in the next 30 days (EPSS).
• Severity: 9.3 HIGH (CVSS).
• Fix: a patch or advisory is linked.
• It meets the bar for Drop everything: critical, and exploited or very likely to be.

Details

Published

2009-08-12 17:30 UTC

Last modified

2026-06-16 23:07 UTC

Exploit probability

51.6% · EPSS, next 30 days

Weakness

CWE-119 · Buffer errors

Record status

Modified

Affected

• Microsoft Isa Server 2004
• Microsoft Isa Server 2006
• Microsoft Office
• Microsoft Office 2003
• Microsoft Office Xp
• Microsoft Office Web Components 2000
• Microsoft Office Web Components 2003
• Microsoft Office Web Components Xp

Attack profile CVSS 2.0 · 9.3

Attack vector

Network

Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-1534.md and follow it. Check whether this project is affected by CVE-2009-1534. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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