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CVE-2020-1002

20
FAUCET Score

CVE-2020-1002 is an elevation of privilege vulnerability in Microsoft Defender's MpSigStub.exe component, allowing an authenticated attacker to delete files in arbitrary locations. With a CVSS score of 7.1 (HIGH), it requires local access and has high impact on integrity and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion, though it was addressed in Microsoft's April 2020 Patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*
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:security_essentials:-:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:system_center_endpoint_protection:*:*:*:*:*:*:*:*
2012CPE matchmatch criteria
cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
49.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0071 is in the 86th percentile among its peer group of 17,070 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 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

microsoft2020-Apr/CVE-2020-1002Important

Microsoft Defender Elevation of Privilege Vulnerability

Apr 14, 2020

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-1002
PatchVendor Advisory