CVE-2009-0238 · netVigilance record NV26-0083
Microsoft Office Remote Code Execution
past due
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2026-04-28 · passed 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.
Who is affected
Microsoft Office. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-94.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 months ago
Sources
- NVD entry for CVE-2009-0238 nvd.nist.gov/vuln/detail/CVE-2009-0238
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- learn.microsoft.com learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2009-0238