CVE-2021-40441 — Windows Media Center Elevation of Privilege Vulnerability

Executive Summary

None

Overview

7.8

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Elevation of Privilege

Released Dec 14 2021

Last Updated Dec 14 2021

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.00701 — 0.48314 percentile

NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

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

ATTACK VECTOR

Local

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

Low

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

High

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 6.8

EPSS Score

0.00701

probability of exploitation in the next 30 days

0.48314 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 5008244 (Monthly Rollup) 5008282 (Security Only) Important Elevation of Privilege 5007236 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25796 Yes 5008244 5008282 Windows 7 for x64-based Systems Service Pack 1 5008244 (Monthly Rollup) 5008282 (Security Only) Important Elevation of Privilege 5007236 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.25796 Yes 5008244 5008282 Windows 8.1 for 32-bit systems 5008263 (Monthly Rollup) 5008285 (Security Only) Important Elevation of Privilege 5007247 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20207 Yes 5008263 5008285 Windows 8.1 for x64-based systems 5008263 (Monthly Rollup) 5008285 (Security Only) Important Elevation of Privilege 5007247 Base: 7.8 Temporal: 6.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.20207 Yes 5008263 5008285 Windows RT 8.1	`5008263 (Monthly Rollup)`	Important	Elevation of Privilege	Yes

Patches

1 patch

Article	Type	Restart
`5008263`	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