SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2009-0559

Stack-based buffer overflow in Excel in Microsoft Office 2000 SP3 and Office XP SP3 allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "String Copy Stack-Based Overrun Vulnerability."

HIGH 9.3EPSS 29.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 29.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Stack-based buffer overflow in Excel in Microsoft Office 2000 SP3 and Office XP SP3 allows remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "String Copy Stack-Based Overrun Vulnerability."

CVSS 2.0
9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS
29.44% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-94
Affected
microsoft/office · microsoft/office compatibility pack for word excel ppt 2007 · microsoft/office excel · microsoft/office excel viewer · microsoft/office sharepoint server · microsoft/open xml file format converter
Source
secure@microsoft.com
EPSS trend
0%15%30%26 October 2026: 29.44%26 October 202626 October 2026

EPSS 29.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.