RCE in Microsoft Office
CVE-2009-0557
Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Micros…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.586 (99.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Office — versions 2000, 2003, 2004
- Microsoft Office_compatibility_pack — versions 2007
- Microsoft Office_excel_viewer — versions 2003
- Microsoft Office_sharepoint_server — versions 2007
- Microsoft Open_xml_file_format_converter
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secure@microsoft.com (vdb-entry, Broken Link, x_refsource_VUPEN)
- secure@microsoft.com (Broken Link, signature, x_refsource_OVAL, vdb-entry)
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
- secure@microsoft.com (x_refsource_MS, vendor-advisory, Patch, Vendor Advisory)
- secure@microsoft.com (x_refsource_OSVDB, vdb-entry, Broken Link)
- secure@microsoft.com (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
- secure@microsoft.com (US Government Resource, Third Party Advisory, x_refsource_CERT, Broken Link, third-party-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2009-0557?
- CVE-2009-0557 is a high-severity vulnerability in Microsoft Office, classified under Code Injection. CVSS score: 7.8/10. Published 2009-06-10.
- How severe is CVE-2009-0557?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2009-0557 known to be exploited?
- Yes. CVE-2009-0557 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-08), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.