7.1

CVE-2021-42284: microsoft windows_10

CVSS: 7.1v2.0HighModified
Published 10-11-2021Last modified 19-08-2026
Open JSON

Vulnerability summary

CVE-2021-42284 is a high (CVSS 7.1) vulnerability in microsoft windows_10. EPSS estimates a 3.76% chance of exploitation in the next 30 days, higher than 89.7% of scored vulnerabilities.

Overall risk
29/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.1/10
010
High · v2.0 (NVD)
EPSS score
3.76%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-11-2021
    PublishedVulnerability first disclosed.
  2. 19-08-2026
    Last modifiedVulnerability information updated.

Description

Windows Hyper-V Denial of Service Vulnerability

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.76%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

+0.03 pp

From 3.73% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.76%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Microsoft21 products

1 vendor · 21 products

References

2 links