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CVE-2008-1434

41
FAUCET Score

CVE-2008-1434 is a critical use-after-free vulnerability affecting Microsoft Word in Office 2000, XP SP3, 2003 SP2/SP3, and 2007 Office System SP1 and earlier, as well as related products like Word Viewer. This flaw allows remote attackers to execute arbitrary code by crafting an HTML document with numerous CSS selectors, leading to memory corruption. With a CVSS score of 9.3, it is highly severe, requiring medium attack complexity but granting complete confidentiality, integrity, and availability compromise. While the EPSS score indicates a higher than average exploitability probability, there is no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2000CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2000:sp3:*:*:*:*:*:*
2003CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2003:sp2:*:*:*:*:*:*
2003CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2003:sp3:*:*:*:*:*:*
2004CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:*
2007CPE matchmatch criteria
cpe:2.3:a:microsoft:office:2007:*:*:*:*:*:*:*

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
30.87%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.3087 is in the 93rd percentile among its peer group of 8,920 CVEs.

Social Chatter

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

labs.idefense.com / intelligence/vulnerabilities/display.php
marc.info
docs.microsoft.com / en-us/security-updates/securitybulletins/2008/ms08-026
secunia.com / advisories/30143
Vendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5012
securityfocus.com / bid/29105
Patch
securitytracker.com / id
us-cert.gov / cas/techalerts/TA08-134A.html
US Government Resource
vupen.com / english/advisories/2008/1504/references
Vendor Advisory