CVE-2008-4024

Exploitation likely. EPSS gives it a 29% chance of exploitation in the next 30 days. A vendor fix is available.

CVSS 2.09.3Critical EPSS percentile98th29% chance in 30 days CISA KEVNot listedNo confirmed exploitation
No public exploit known FixVendor fixNo build named by the sources

Published 2008-12-10Updated 2026-04-23Sources: CVE.org, NVD

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Microsoft Office Word 2000 SP3 and 2002 SP3 and Office 2004 for Mac allow remote attackers to execute arbitrary code via a Word document with a crafted lcbPlcfBkfSdt field in the File Information Block (FIB), which bypasses an initialization step and triggers an "arbitrary free," aka "Word Memory Corruption Vulnerability."

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS98th

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

29% chance of exploitation activity in the next 30 days, which ranks it in the 98th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

7 events over 6406 days, from the signal feeds we watch.

2026-06-25OpenVAS check added
2026-06-22EPSS band changehigh → moderate
2026-04-23Patch availablerecord updated
2008-12-10Publishedweakness classified, att&ck mapped

Affected products

microsoftcommercial · US
- officeDesktop AppConsumer Software / productivity
- office compatibility pack for word excel ppt 2007Desktop AppOn-premConsumer Software / productivity
- office word viewerDesktop AppOn-premConsumer Software / productivity
- open xml file format converterDesktop AppOn-premOperating Systems / windows
- worksDesktop AppOn-premConsumer Software
- office outlookOn-premOperating Systems / windows
- office wordDesktop AppOn-premConsumer Software / productivity

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

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

Scored 9.3 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity MediumSome conditions must be met
Authentication NoneNo authentication required

Impact if exploited

Confidentiality CompleteAll information is disclosed
Integrity CompleteAll data can be modified
Availability CompleteTotal shutdown of the affected resource

Weaknesses

CWE-94No name in the record

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

ExecutionT1059Command and Scripting Interpreterhigh confidence
Initial AccessT1190Exploit Public-Facing Applicationhigh confidence

Sources

References in the record

And 5 more references. See all after sign-in

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