CVE-2022-21919 [Exploited] | Microsoft WINDOWS 10 1507

CVE-2022-21919 is rated Active Exploitation (71.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.30%). CISA KEV confirms active exploitation (added 2022-04-25) affecting Microsoft / Windows. a weakness (CWE-59) Unauthenticated remote administrative access may be possible. The CISA remediation deadline has passed—treat as an emergency patch priority.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-12-28	0.24%	0.30%	+0.06%
2	2025-12-27	0.32%	0.24%	-0.07%
3	2025-10-31	—	0.32%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-12-28

0.24%

0.30%

+0.06%

2025-12-27

0.32%

0.24%

-0.07%

2025-10-31

—

0.32%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.0	3.1	HIGH	`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:H) Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:H) Serious risk that confidential data gets exposed in a big way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.0	5.9	[email protected]
6.9	2.0	MEDIUM	`AV:L/AC:M/Au:N/C:C/I:C/A:C` Click to expand Access vector (AV:L) Requires local access to the target system. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:C) Complete confidentiality impact. Integrity impact (I:C) Complete integrity impact. Availability impact (A:C) Complete availability impact.	3.4	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.0

3.1

HIGH

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

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H): Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H): Serious risk that confidential data gets exposed in a big way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.0

5.9

[email protected]

6.9

2.0

MEDIUM

AV:L/AC:M/Au:N/C:C/I:C/A:C Click to expand

Access vector (AV:L): Requires local access to the target system.
Access complexity (AC:M): Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:C): Complete confidentiality impact.
Integrity impact (I:C): Complete integrity impact.
Availability impact (A:C): Complete availability impact.

3.4

10.0

[email protected]

Affected software / configurations for CVE-2022-21919

Vendor	Product	Version	Raw CPE
microsoft	windows_10_1507	< 10.0.10240.19177	cpe:2.3:o:microsoft:windows_10_1507:::::::x64:*
microsoft	windows_10_1507	< 10.0.10240.19177	cpe:2.3:o:microsoft:windows_10_1507:::::::x86:*
microsoft	windows_10_1607	< 10.0.14393.4886	cpe:2.3:o:microsoft:windows_10_1607:::::::x64:*
microsoft	windows_10_1607	< 10.0.14393.4886	cpe:2.3:o:microsoft:windows_10_1607:::::::x86:*
microsoft	windows_10_1809	< 10.0.17763.2452	cpe:2.3:o:microsoft:windows_10_1809:::::::x64:*
microsoft	windows_10_1809	< 10.0.17763.2452	cpe:2.3:o:microsoft:windows_10_1809:::::::x86:*
microsoft	windows_10_1909	< 10.0.18363.2037	cpe:2.3:o:microsoft:windows_10_1909::::::::
microsoft	windows_10_20h2	< 10.0.19042.1466	cpe:2.3:o:microsoft:windows_10_20h2::::::::
microsoft	windows_10_21h1	< 10.0.19043.1466	cpe:2.3:o:microsoft:windows_10_21h1::::::::
microsoft	windows_10_21h2	< 10.0.19044.1466	cpe:2.3:o:microsoft:windows_10_21h2::::::::
microsoft	windows_11_21h2	< 10.0.22000.434	cpe:2.3:o:microsoft:windows_11_21h2::::::::
microsoft	windows_7	—	cpe:2.3:o:microsoft:windows_7:-:sp1::::::
microsoft	windows_8.1	—	cpe:2.3:o:microsoft:windows_8.1:-:::::::*
microsoft	windows_rt_8.1	—	cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*
microsoft	windows_server_2008	—	cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::
microsoft	windows_server_2008	r2	cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::x64:*
microsoft	windows_server_2012	—	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
microsoft	windows_server_2012	r2	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
microsoft	windows_server_2016	< 10.0.14393.4886	cpe:2.3:o:microsoft:windows_server_2016::::::::
microsoft	windows_server_2019	< 10.0.17763.2452	cpe:2.3:o:microsoft:windows_server_2019::::::::
microsoft	windows_server_2022	< 10.0.20348.469	cpe:2.3:o:microsoft:windows_server_2022::::::::
microsoft	windows_server_20h2	< 10.0.19042.1466	cpe:2.3:o:microsoft:windows_server_20h2::::::::

References for CVE-2022-21919

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21919	Patch Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21919	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21919	US Government Resource

URL

CVE-2022-21919 | Windows User Profile Service Elevation of Privilege Vulnerability

CISA KEV Record for CVE-2022-21919

Exploit prediction scoring system (EPSS) score for CVE-2022-21919

Common vulnerability scoring system (CVSS) metrics for CVE-2022-21919

Weakness enumeration for CVE-2022-21919

Affected software / configurations for CVE-2022-21919

References for CVE-2022-21919