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CVE-2018-0986

74
FAUCET Score

CVE-2018-0986 is a remote code execution vulnerability in the Microsoft Malware Protection Engine, affecting numerous Microsoft security products including Windows Defender and Exchange Server. This high-severity flaw (CVSS 8.8) allows an unauthenticated attacker to achieve full compromise (confidentiality, integrity, availability) by tricking a user into opening a specially crafted file, leading to memory corruption. While not listed in CISA KEV, public exploit code exists (EDB-44402), and the vulnerability has garnered significant community discussion and media coverage, indicating its potential for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2013:-:*:*:*:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:exchange_server:2016:-:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:forefront_endpoint_protection_2010:-:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:intune_endpoint_protection:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
63.47%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-44402 · Apr 5, 2018
This CVE's current EPSS score of 0.6347 is in the 99th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2018-Apr/CVE-2018-0986Critical

Microsoft Malware Protection Engine Remote Code Execution Vulnerability

Apr 10, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-0986
PatchVendor Advisory
exploit-db.com / exploits/44402
ExploitThird Party AdvisoryVDB Entry
securityfocus.com / bid/103593
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040631
Third Party AdvisoryVDB Entry