CVE-2022-21907 [Critical] | RCE in Windows 10

CVE-2022-21907 is rated High Exploit Risk (90.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 91.89%, 100th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.70% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

EDB-ID	Source	Kind	Published	Link
51575	exploit_db	edb	2023-07-07	Exploit-DB ↗

EDB-ID

Source

Kind

Published

Link

51575

exploit_db

edb

2023-07-07

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-11-21	90.19%	91.89%	+1.70%
2	2025-11-18	91.89%	90.19%	-1.70%
3	2025-11-02	—	91.89%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-11-21

90.19%

91.89%

+1.70%

2025-11-18

91.89%

90.19%

-1.70%

2025-11-02

—

91.89%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.1	CRITICAL	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. 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.	3.9	5.9	[email protected]
10.0	2.0	HIGH	`AV:N/AC:L/Au:N/C:C/I:C/A:C` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. 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.	10.0	10.0	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.1

CRITICAL

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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.

3.9

5.9

[email protected]

10.0

2.0

HIGH

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

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
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.

10.0

[email protected]

Affected software / configurations for CVE-2022-21907

Vendor	Product	Version	Raw CPE
microsoft	windows_10	20h2	cpe:2.3:o:microsoft:windows_10:20h2::::::arm64:
microsoft	windows_10	20h2	cpe:2.3:o:microsoft:windows_10:20h2::::::x64:
microsoft	windows_10	20h2	cpe:2.3:o:microsoft:windows_10:20h2::::::x86:
microsoft	windows_10	21h1	cpe:2.3:o:microsoft:windows_10:21h1::::::arm64:
microsoft	windows_10	21h1	cpe:2.3:o:microsoft:windows_10:21h1::::::x64:
microsoft	windows_10	21h1	cpe:2.3:o:microsoft:windows_10:21h1::::::x86:
microsoft	windows_10	21h2	cpe:2.3:o:microsoft:windows_10:21h2::::::arm64:
microsoft	windows_10	21h2	cpe:2.3:o:microsoft:windows_10:21h2::::::x64:
microsoft	windows_10	21h2	cpe:2.3:o:microsoft:windows_10:21h2::::::x86:
microsoft	windows_10	1809	cpe:2.3:o:microsoft:windows_10:1809::::::arm64:
microsoft	windows_10	1809	cpe:2.3:o:microsoft:windows_10:1809::::::x64:
microsoft	windows_10	1809	cpe:2.3:o:microsoft:windows_10:1809::::::x86:
microsoft	windows_11	—	cpe:2.3:o:microsoft:windows_11:-::::::arm64:
microsoft	windows_11	—	cpe:2.3:o:microsoft:windows_11:-::::::x64:
microsoft	windows_server	20h2	cpe:2.3:o:microsoft:windows_server:20h2:::::::*
microsoft	windows_server	2022	cpe:2.3:o:microsoft:windows_server:2022:::::::*
microsoft	windows_server_2019	—	cpe:2.3:o:microsoft:windows_server_2019:-:::::::*

References for CVE-2022-21907

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21907
http://packetstormsecurity.com/files/166730/Microsoft-HTTP-Protocol-Stack-Denial-Of-Service.html
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21907

URL

CVE-2022-21907 | HTTP Protocol Stack Remote Code Execution Vulnerability

Public exploit references (Exploit-DB) for CVE-2022-21907

Exploit prediction scoring system (EPSS) score for CVE-2022-21907

Common vulnerability scoring system (CVSS) metrics for CVE-2022-21907

Weakness enumeration for CVE-2022-21907

Affected software / configurations for CVE-2022-21907

References for CVE-2022-21907