$ cve CVE-2006-1540 JSON

CVE-2006-1540 EXPLOIT

9.3

HIGH · CVSS 2.0 · EPSS 28.6% (pctl 98)

Patch early

A public exploit exists.

Description

MSO.DLL in Microsoft Office 2000, Office XP (2002), and Office 2003 allows user-assisted attackers to cause a denial of service and execute arbitrary code via multiple attack vectors, as originally demonstrated using a crafted document record with a malformed string, as demonstrated by replacing a certain "01 00 00 00" byte sequence with an "FF FF FF FF" byte sequence, possibly causing an invalid array index, in (1) an Excel .xls document, which triggers an access violation in ole32.dll; (2) an Excel .xlw document, which triggers an access violation in excel.exe; (3) a Word document, which triggers an access violation in mso.dll in winword.exe; and (4) a PowerPoint document, which triggers an access violation in powerpnt.txt. NOTE: after the initial disclosure, this issue was demonstrated by triggering an integer overflow using an inconsistent size for a Unicode "Sheet Name" string.

Scoring

CVSS	9.3 (HIGH, v2.0)
Vector	AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS	28.63% — more likely to be exploited than 98% of all CVEs
Weakness	CWE-94
On CISA KEV	no
Public exploit	yes
Published	2006-03-30
Last modified	2026-06-16

Affected (1)

Vendor	Product
microsoft	office

Public exploits

Source	Title	Date
exploit-db	Microsoft Office Products - Array Index Bounds Error (PoC)	2006-03-27

References

→ the Explorer · watch your stack · NVD