Known exploited vulnerability
CVE-2009-0557
The short answer
CVE-2009-0557 affects n/a n/a and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-06-08: attackers are using it, so patch it first. The vendor has linked a patch.
What it is
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; Microsoft Office Excel Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allow remote attackers to execute arbitrary code via a crafted Excel file with a malformed record object, aka "Object Record Corruption Vulnerability."
Weakness: CWE-94.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Jun 8, 2022
Federal due date Jun 22, 2022
EPSS, next 30 days
53%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
n/a. NVD's record lists the exact affected versions.
References
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021 PatchVendor Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5564 Broken Link
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021 PatchVendor Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5564 Broken Link
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0557 US Government Resource
Questions
Is CVE-2009-0557 being exploited?
Yes. CISA added CVE-2009-0557 to its Known Exploited Vulnerabilities catalog on 2022-06-08, with a federal remediation due date of 2022-06-22.
How do I fix CVE-2009-0557?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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