Malware Protection Engine
Vendor:
First CVE: Feb 13, 2007 · Active for 19 years
28
Total CVEs
More Total CVEs than 96% of tracked products
2.8
Avg CVEs / Year
Higher CVE frequency than 75% of tracked products
7.2
Avg CVSS
Higher Avg CVSS than 44% of tracked products
7.1%
KEV Rate
Higher KEV Rate than 97% of tracked products
Trends Over Time
The number and severity of CVEs published that impact Malware Protection Engine over time
Volume of CVEsAvg CVSS Base Score
First CVE
Feb 13, 2007
19 years ago
Most Recent CVE
Jun 16, 2026
38 days ago
CVE Severity & Scoring
Malware Protection Engine28 CVEs
29%
71%
All CVEs352,294 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local19 (67.9%)
Network3 (10.7%)
Unknown6 (21.4%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low19 (67.9%)
High3 (10.7%)
Unknown6 (21.4%)
User Interaction
None8 (28.6%)
Unknown6 (21.4%)
Required14 (50.0%)
Privileges Required
Low6 (21.4%)
High0 (0.0%)
None16 (57.1%)
Unknown6 (21.4%)
Top CVEs
Signals from CVEs in this product scope (28 CVEs).
28 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2017-8540HIGH The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S | May 26, 2017 | 7.8 | 94 | YES | YES |
CVE-2026-41091HIGH Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally. | May 20, 2026 | 7.8 | 80 | YES | NO |
CVE-2017-0290HIGH The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S | May 9, 2017 | 7.8 | 76 | NO | YES |
CVE-2017-8541HIGH The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S | May 26, 2017 | 7.8 | 64 | NO | YES |
CVE-2017-8538HIGH The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows S | May 26, 2017 | 7.8 | 64 | NO | YES |
CVE-2026-50656HIGH Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ". | Jun 16, 2026 | 7.8 | 45 | NO | NO |
CVE-2026-45584HIGH Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network. | May 20, 2026 | 8.1 | 38 | NO | NO |
CVE-2017-11937HIGH The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Windows 7 SP1, Windows 8.1, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, | Dec 7, 2017 | 7.8 | 37 | NO | NO |
CVE-2006-5270HIGH 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 | Feb 13, 2007 | 9.3 | 37 | NO | NO |
CVE-2021-31985HIGH Microsoft Defender Remote Code Execution Vulnerability | Jun 8, 2021 | 8.8 | 30 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (28 CVEs).
CISA KEV
2 CVEs
7.1% of CVEs· 97th percentile
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
4 CVEs
14.3% of CVEs· 89th percentile
Social Chatter
Signals from CVEs in this product scope (28 CVEs).
Media Mentions
Signals from CVEs in this product scope (28 CVEs).
Top CNAs Publishing CVEs For Malware Protection Engine
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 1.1.3520.0 | 3 | 5.7 | 9.2% | 0 | 0 |
| 1.1.20000.2 | 1 | 6.3 | 0.3% | 0 | 0 |
| 0.1.13.192 | 3 | 5.7 | 9.2% | 0 | 0 |