Vulnerability in Microsoft Malware Protection Engine

CVE-2021-31978

Microsoft Defender Denial of Service Vulnerability

EPSS: 0.006 (70.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C.

Affected products

Microsoft Malware Protection Engine — versions 1.1.0.0

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31978 (x_refsource_MISC)

Frequently asked questions

What is CVE-2021-31978?: CVE-2021-31978 is a medium-severity vulnerability in Microsoft Malware Protection Engine. CVSS score: 5.5/10. Published 2021-06-08.
How severe is CVE-2021-31978?: Medium severity. CVSS v3 base score is 5.5 out of 10.