CVE-2022-21973 — Windows Media Center Update Denial of Service Vulnerability

Executive Summary

None

Overview

5.5

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Denial of Service

Released Mar 8 2022

Last Updated Mar 8 2022

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.0061 — 0.4445 percentile

NVD CVSS 5.5 MEDIUM — matches MSRC

CVSS Vector

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

ATTACK VECTOR

Local

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

Low

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

None

INTEGRITY

None

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 4.8

EPSS Score

0.0061

probability of exploitation in the next 30 days

0.4445 percentile - updated 2026-06-21

View on FIRST.org

Affected Products

1 affected product

Product	KB Article	Severity	Impact	Restart Required
Windows 7 for 32-bit Systems Service Pack 1 5011552 (Monthly Rollup) 5011529 (Security Only) Important Denial of Service 5010404 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.25898 Yes 5011552 5011529 Windows 7 for x64-based Systems Service Pack 1 5011552 (Monthly Rollup) 5011529 (Security Only) Important Denial of Service 5010404 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.25898 Yes 5011552 5011529 Windows 8.1 for 32-bit systems 5011564 (Monthly Rollup) 5011560 (Security Only) Important Denial of Service 5010419 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.3.9600.20303 Yes 5011564 5011560 Windows 8.1 for x64-based systems 5011564 (Monthly Rollup) 5011560 (Security Only) Important Denial of Service 5010419 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.3.9600.20303 Yes 5011564 5011560 Windows RT 8.1	`5011564 (Monthly Rollup)`	Important	Denial of Service	Yes

Patches

1 patch

Article	Type	Restart
`5011564`	Monthly Rollup	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

JIWO Technology Co., Ltd

References

MSRC Advisory MITRE NVD