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Vulnerability record · CVE-2013-1346 · published 15 May 2013

CVE-2013-1346: Microsoft malware protection engine memory buffer overflow vulnerability

Microsoft · Malware Protection Engine

mpengine.dll in Microsoft Malware Protection Engine before 1.1.9506.0 on x64 platforms allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted file.

9.3 CVSS 2.0 High EPSS 12% · top 4.1% CWE-119 · Memory buffer overflow
9.3CVSS 2.0 base score
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
16 Jun 2026Last modified by NVD

Description

mpengine.dll in Microsoft Malware Protection Engine before 1.1.9506.0 on x64 platforms allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted file.

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://technet.microsoft.com/security/advisory/2846338 PatchVendor Advisory
http://technet.microsoft.com/security/advisory/2846338 PatchVendor Advisory

Track CVE-2013-1346 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2026-41091Microsoft Defender link following allows local privilege elevationMicrosoft Defender's malware protection engine resolves links improperly before accessing files, a link-following flaw (CWE-59). A local attacker wit…KEVEPSS 0.44%analysed7.8CVE-2017-8540Microsoft Malware Protection Engine out-of-bounds write via crafted fileThe Microsoft Malware Protection Engine, used by Windows Defender, Forefront, Security Essentials, System Center Endpoint Protection, Intune Endpoint…KEVEPSS 72%analysed9.3CVE-2006-5270Microsoft antigen vulnerabilityInteger overflow in the Microsoft Malware Protection Engine (mpengine.dll), as used by Windows Live OneCare, Antigen, Defender, and Forefront Securit…EPSS 30%8.1CVE-2026-45584Microsoft malware protection engine heap-based buffer overflow vulnerabilityHeap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.EPSS 0.71%7.8CVE-2026-69414Microsoft malware protection engine improper access control vulnerabilityMicrosoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "Shield…EPSS 0.33%7.8CVE-2026-55012Microsoft malware protection engine heap-based buffer overflow vulnerabilityInteger overflow or wraparound in Microsoft Defender allows an unauthorized attacker to execute code locally.EPSS 0.47%7.8CVE-2026-55011Microsoft malware protection engine vulnerabilityInteger underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.EPSS 0.47%7.8CVE-2021-42298Microsoft malware protection engine code injection vulnerabilityMicrosoft Defender Remote Code Execution VulnerabilityEPSS 5.8%

Source: NIST National Vulnerability Database (record CVE-2013-1346), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.