Windows Defender vulnerabilitiesAnd the versions its exploited flaws hit.
Windows Defender is made by Microsoft. We track 30 published vulnerabilities listed under that exact name, across 2 versions. 2 of them are on the list of flaws known to be exploited, the newest added on 3 March 2022. Microsoft lists newer releases under their own names, such as Windows Defender for Endpoint, so check those pages too.
The most recent Windows Defender flaw added to the known-exploited list is CVE-2017-8540, on 3 March 2022. We keep watching the known-exploited list.
Is Windows Defender listed under other names? Yes.
Microsoft also lists Windows Defender under more specific names, such as Windows Defender for Endpoint and Windows Defender Antimalware Platform. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of Windows Defender do the exploited flaws hit?
Each exploited flaw lists the versions it affects, as published by the vendor. Find your version, then patch.
Which Windows Defender vulnerabilities are being exploited?
2 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.8Microsoft Malware Protection Engine Improper Restriction of Operations Vulnerability
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 Server 2012 Gold and R2, Windows RT...
- 7.8Microsoft Defender Remote Code Execution Vulnerability
Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.
Which Windows Defender flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- 81%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 Server 2012 Gold and R2, Windows RT...
- 63%CVE-2018-0986High
A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote...
- 44%CVE-2017-8558High
The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 32-bit versions of Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold...
- 39%
Microsoft Defender Remote Code Execution Vulnerability
- 30%CVE-2006-5270Critical
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...
- 28%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, 1709 and Windows Server 2016,...
- 20%CVE-2017-11940High
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, 1709 and Windows Server 2016,...
Running Windows Defender? We'll keep checking.
Looking flaws up one at a time doesn't scale. Tell us what you run once, and we tell you which flaws matter to you, in what order, and keep watching for new ones.
- Tell us what you runPick your software from a list, or let us work it out from your website.
- We match it to every flawOver 400,000 published flaws, checked against your list.
- Ranked by real-world riskA 0 to 100 score, led by evidence criminals are using it.
- Told as soon as we knowAn alert by email, in the app or by webhook to your own tools.
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1 flaw being exploited affects software Acme tracks
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 Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016, does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".
- Matched to
- Windows Defender on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 30 published vulnerabilities listed under the name Windows Defender, across 2 versions. The most recent Windows Defender flaw added to the known-exploited list is CVE-2017-8540, on 3 March 2022.
2 are on the list of flaws known to be exploited. The most recently added are CVE-2017-8540 and CVE-2021-1647.
Microsoft also lists Windows Defender under more specific names, such as Windows Defender for Endpoint and Windows Defender Antimalware Platform. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Create a Precursor Intelligence account and track Windows Defender. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.