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Fencer Vulns
high 7.5

CVE-2006-3431 in the critical feed json

Buffer overflow in certain Asian language versions of Microsoft Excel might allow user-assisted attackers to execute arbitrary code via a c…

published 2006-07-07 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-3427

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
28.3%
EPSS 28.3% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Buffer overflow in certain Asian language versions of Microsoft Excel might allow user-assisted attackers to execute arbitrary code via a crafted STYLE record in a spreadsheet that triggers the overflow when the user attempts to repair the document or selects the "Style" option, as demonstrated by nanika.xls. NOTE: Microsoft has confirmed to CVE via e-mail that this is different than the other Excel vulnerabilities announced before 20060707, including CVE-2006-3059 and CVE-2006-3086.

Timeline

  1. First public exploit (EDB-28189)
  2. Published

Exploit prediction

28.32% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-28189 Microsoft Excel 2000-2004 - Style Handling and Repair Remote Code Execution remote, 2006-07-06
  • securityfocus.com http://www.securityfocus.com/bid/18872 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.