SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2009-0563

Microsoft Office Buffer Overflow Vulnerability

KEVHIGH 7.8EPSS 63.1%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 22 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Stack-based buffer overflow in Microsoft Office Word 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Microsoft Office for Mac 2004 and 2008; Open XML File Format Converter for Mac; Microsoft Office Word Viewer 2003 SP3; Microsoft Office Word Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a Word document with a crafted tag containing an invalid length field, aka "Word Buffer Overflow Vulnerability."

CVSS 3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
63.08% probability · 99th percentile
CISA KEV
Listed 8 June 2022 · due 22 June 2022
Weakness
CWE-787
Affected
microsoft/office · microsoft/office compatibility pack · microsoft/office word viewer · microsoft/open xml file format converter
Source
secure@microsoft.com

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2009-0563

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.