CVE-2024-43584 [High] | Security Bypass in Windows 11 21h2

CVE-2024-43584 is rated Moderate Risk (56.7/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.79%). Review affected assets and schedule remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-02-27	0.58%	0.79%	+0.21%
2	2025-12-06	0.49%	0.58%	+0.09%
3	2025-11-21	—	0.49%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-02-27

0.58%

0.79%

+0.21%

2025-12-06

0.49%

0.58%

+0.09%

2025-11-21

—

0.49%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.7	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N` 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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. 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:N) Service keeps running; no real outage angle.	2.5	5.2	[email protected]
8.4	3.1	HIGH	`CVSS:3.1/AV:L/AC:L/PR:N/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:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. 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.	2.5	5.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.7

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N 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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
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:N): Service keeps running; no real outage angle.

2.5

5.2

[email protected]

8.4

3.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/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:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
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.

2.5

5.9

[email protected]

Affected software / configurations for CVE-2024-43584

Vendor	Product	Version	Raw CPE
microsoft	windows_11_21h2	< 10.0.22000.3260	cpe:2.3:o:microsoft:windows_11_21h2:::::::arm64:*
microsoft	windows_11_21h2	< 10.0.22000.3260	cpe:2.3:o:microsoft:windows_11_21h2:::::::x64:*
microsoft	windows_11_22h2	< 10.0.22621.4317	cpe:2.3:o:microsoft:windows_11_22h2:::::::arm64:*
microsoft	windows_11_22h2	< 10.0.22621.4317	cpe:2.3:o:microsoft:windows_11_22h2:::::::x64:*
microsoft	windows_11_23h2	< 10.0.22631.4317	cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*
microsoft	windows_11_23h2	< 10.0.22631.4317	cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:*
microsoft	windows_11_24h2	< 10.0.26100.2033	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
microsoft	windows_11_24h2	< 10.0.26100.2033	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
microsoft	windows_server_2022	< 10.0.20348.2762	cpe:2.3:o:microsoft:windows_server_2022::::::::
microsoft	windows_server_2022_23h2	< 10.0.25398.1189	cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::

References for CVE-2024-43584

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43584	Patch Vendor Advisory

URL

CVE-2024-43584 | Windows Scripting Engine Security Feature Bypass Vulnerability

Exploit prediction scoring system (EPSS) score for CVE-2024-43584

Common vulnerability scoring system (CVSS) metrics for CVE-2024-43584

Weakness enumeration for CVE-2024-43584

Affected software / configurations for CVE-2024-43584

References for CVE-2024-43584