CVE-2017-8540

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.719 · 99 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 1 exploit · functional

Likely / severe?

71.9% (99th) EPSS

CVSS 9.3 · high

Is it mine?

21 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-03-03remediate by 2022-03-24

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Microsoft 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 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", a different vulnerability than CVE-2017-8538 and CVE-2017-8541.

cvss

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-119US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-42088Microsoft MsMpEng - Remote Use-After-Free Due to Design Issue in GC Enginefunctional · exploit_db

affected products (21)

Products and version ranges known to be affected.

Microsoft Corporation Malware Protection Engine≤ 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.enisa_euvdEU
Microsoft Corp Intune Endpoint Protectionall versionsfstec_bduRU
Microsoft Corp Microsoft Endpoint Protectionall versionsfstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2013fstec_bduRU
Microsoft Corp Microsoft Exchange Server≤ 2016fstec_bduRU
Microsoft Corp Microsoft Forefront Endpoint Protectionall versionsfstec_bduRU
Microsoft Corp Microsoft Forefront Endpoint Protection≤ 2010fstec_bduRU
Microsoft Corp Microsoft Malware Protection Engine≤ 1.1.13704.0fstec_bduRU
Microsoft Corp Microsoft Security Essentialsall versionsfstec_bduRU
Microsoft Corp System Center Endpoint Protectionall versionsfstec_bduRU
microsoft endpoint protectionall versionsnvdUScpe:2.3:a:microsoft:endpoint_protection:*:*:*:*:*:*:*:*
microsoft exchange server= 2013nvdUScpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*
microsoft exchange server= 2016nvdUScpe:2.3:a:microsoft:exchange_server:*:*:*:*:*:*:*:*
microsoft forefront endpoint protectionall versionsnvdUScpe:2.3:a:microsoft:forefront_endpoint_protection:*:*:*:*:*:*:*:*
microsoft forefront endpoint protection= 2010nvdUScpe:2.3:a:microsoft:forefront_endpoint_protection:*:*:*:*:*:*:*:*
microsoft forefront securityall versionsnvdUScpe:2.3:a:microsoft:forefront_security:*:*:*:*:*:*:*:*
microsoft intune endpoint protectionall versionsnvdUScpe:2.3:a:microsoft:intune_endpoint_protection:*:*:*:*:*:*:*:*
microsoft malware protection engine1.1.13701.0 → 1.1.13704.0nvdUScpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:*
microsoft security essentialsall versionsnvdUScpe:2.3:a:microsoft:security_essentials:*:*:*:*:*:*:*:*
microsoft system center endpoint protectionall versionsnvdUScpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:*

showing 20 of 21

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2017-05-26modified 2026-06-17

related (16,125)

Related entries.

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In the Linux kernel, the following vulnerability has been resolved: ipv6: account for fraggap on the paged allocation path In __ip6_append_data(), when the paged-allocation branc…
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In the Linux kernel, the following vulnerability has been resolved: netfilter: bridge: make ebt_snat ARP rewrite writable The ebtables SNAT target keeps the Ethernet source addre…
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+16120 more

references (10)

External citations — patches, advisories, analysis.

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540 cnnvd
http://www.securityfocus.com/bid/98703 enisa_euvd
http://www.securitytracker.com/id/1038571 enisa_euvd
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540 enisa_euvd
https://www.exploit-db.com/exploits/42088/enisa_euvd
http://www.securityfocus.com/bid/98703Broken LinkThird Party AdvisoryVDB Entrynvd
http://www.securitytracker.com/id/1038571Broken LinkThird Party AdvisoryVDB Entrynvd
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540MitigationPatchVendor Advisorynvd

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