Vulnerability · CVE-2010-0243
Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO…
Published Feb 10, 2010 · catalog updated Jun 16, 2026 · Apple
Check this week
CVE-2010-0243 is not in CISA KEV. FIRST estimates a 23.63% chance of exploitation in the next 30 days. Check whether you run Apple.
Gaps on this record
- No version range is stored. A customer cannot check an installed version against this record.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 23.63%
- Remediation
- Advisory link
- Affected products
- cpe microsoft/office
Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO.DLL Buffer Overflow."
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe microsoft/office2004
- cpe microsoft/officexp
How to fix CVE-2010-0243
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2010-0243 is not in CISA KEV. FIRST estimates a 23.63% chance of exploitation in the next 30 days. Check whether you run Apple.
Which versions are affected?
Compare what you have installed with 2004, xp. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-119: Buffer Overflow. EPSS 23.63%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 10, 2010 · Apple Security Releases
Detected
Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO.DLL Buffer Overflow."
Jun 16, 2026 · Apple Security Releases
Updated
Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO.DLL Buffer Overflow."
Sources
- Apple Security ReleasesVendor advisoryCVE-2010-0243
Buffer overflow in MSO.DLL in Microsoft Office XP SP3 and Office 2004 for Mac allows remote attackers to execute arbitrary code via a crafted Office document, aka "MSO.DLL Buffer Overflow."
nvd.nist.gov - CVE.orgVulnerability recordCVE-2010-0243
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2010-0243
30-day exploitation probability 23.6%
first.org
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.