CVE-2013-1346
CVE-2013-1346 is a critical-severity vulnerability in Microsoft Malware Protection Engine with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 2.0 base score 9.3)
- EPSS exploit prediction: 12% (96th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Microsoft Malware Protection Engine
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2013-1346?
- 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.
- How severe is CVE-2013-1346?
- CVE-2013-1346 has a CVSS 2.0 base score of 9.3, rated critical severity.
- Is CVE-2013-1346 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2013-1346?
- CVE-2013-1346 affects Microsoft Malware Protection Engine. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2013-1346?
- 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-2013-1346 published?
- CVE-2013-1346 was published on 2013-05-15 and last updated on 2026-06-16.
References
Affected products (1)
- cpe:2.3:a:microsoft:malware_protection_engine:*:-:*:*:*:*:x64:*
More vulnerabilities in Microsoft Malware Protection Engine
- CVE-2006-5270 — Critical (CVSS 9.3): Integer overflow in the Microsoft Malware Protection Engine (mpengine.dll), as used by Windows Live OneCare, Antigen,…
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- CVE-2026-55011 — High (CVSS 7.8): Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
- CVE-2026-50656 — High (CVSS 7.8): Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender…
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