CVE-2006-5270

CVE-2006-5270 is a critical-severity vulnerability in Microsoft Antigen with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 30% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Integer overflow in the Microsoft Malware Protection Engine (mpengine.dll), as used by Windows Live OneCare, Antigen, Defender, and Forefront Security, allows user-assisted remote attackers to execute arbitrary code via a crafted PDF file.

Frequently asked questions

What is CVE-2006-5270?
Integer overflow in the Microsoft Malware Protection Engine (mpengine.dll), as used by Windows Live OneCare, Antigen, Defender, and Forefront Security, allows user-assisted remote attackers to execute arbitrary code via a crafted PDF file.
How severe is CVE-2006-5270?
CVE-2006-5270 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-5270 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5270?
CVE-2006-5270 primarily affects Microsoft Antigen. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-5270?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-5270 published?
CVE-2006-5270 was published on 2007-02-13 and last updated on 2026-06-16.

References

Affected products (5)