CVE-2022-21907

highpriority · act · 82EPSS 0.928 · 100 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

17 exploits · PoC

Likely / severe?

92.8% (100th) EPSS

CVSS 10 · high

Is it mine?

64 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

HTTP Protocol Stack Remote Code Execution Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWindows 10 Version 1809 for 32-bit Systemsmsrc_csaf
10.0.17763.2452:Security Update:https://support.microsoft.com/help/5009557
https://support.microsoft.com/help/5009557
FixedWindows 10 Version 1809 for ARM64-based Systemsmsrc_csaf
10.0.17763.2452:Security Update:https://support.microsoft.com/help/5009557
https://support.microsoft.com/help/5009557
FixedWindows 10 Version 1809 for x64-based Systemsmsrc_csaf
10.0.17763.2452:Security Update:https://support.microsoft.com/help/5009557
https://support.microsoft.com/help/5009557
FixedWindows 10 Version 20H2 for 32-bit Systemsmsrc_csaf
10.0.19042.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 20H2 for ARM64-based Systemsmsrc_csaf
10.0.19042.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H1 for 32-bit Systemsmsrc_csaf
10.0.19043.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H1 for ARM64-based Systemsmsrc_csaf
10.0.19043.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H1 for x64-based Systemsmsrc_csaf
10.0.19043.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H2 for 32-bit Systemsmsrc_csaf
10.0.19044.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.19044.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 10 Version 21H2 for x64-based Systemsmsrc_csaf
10.0.19044.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543
FixedWindows 11 version 21H2 for ARM64-based Systemsmsrc_csaf
10.0.22000.434:Security Update:https://support.microsoft.com/help/5009566
https://support.microsoft.com/help/5009566
FixedWindows 11 version 21H2 for x64-based Systemsmsrc_csaf
10.0.22000.434:Security Update:https://support.microsoft.com/help/5009566
https://support.microsoft.com/help/5009566
FixedWindows Server 2019msrc_csaf
10.0.17763.2452:Security Update:https://support.microsoft.com/help/5009557
https://support.microsoft.com/help/5009557
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.2452:Security Update:https://support.microsoft.com/help/5009557
https://support.microsoft.com/help/5009557
FixedWindows Server 2022msrc_csaf
10.0.20348.469:Security Update:https://support.microsoft.com/help/5009555
https://support.microsoft.com/help/5009555
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.469:Security Update:https://support.microsoft.com/help/5009555
https://support.microsoft.com/help/5009555
FixedWindows Server, version 20H2 (Server Core Installation)msrc_csaf
10.0.19042.1466:Security Update:https://support.microsoft.com/help/5009543
https://support.microsoft.com/help/5009543

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119US

exploits (17)

Public proof-of-concept and weaponised exploit code.

EDB-51575Windows 10 v21H1 - HTTP Protocol Stack Remote Code ExecutionPoC · exploit_db
0xmaximus/Home-DemolisherPoC for CVE-2021-31166 and CVE-2022-21907PoC · poc_in_github
EzoomE/CVE-2022-21907-RCECVE-2022-21907漏洞RCE PoCPoC · poc_in_github
Malwareman007/CVE-2022-21907POC for CVE-2022-21907: HTTP Protocol Stack Remote Code Execution Vulnerability.PoC · poc_in_github
ZZ-SOCMAP/CVE-2022-21907HTTP Protocol Stack Remote Code Execution Vulnerability CVE-2022-21907PoC · poc_in_github
asepsaepdin/CVE-2022-21907asepsaepdin/CVE-2022-21907PoC · poc_in_github

affected products (64)

Products and version ranges known to be affected.

Microsoft Windows 10 Version 180910.0.0 → 10.0.17763.2452enisa_euvdEU
Microsoft Windows 10 Version 180910.0.17763.0 → 10.0.17763.2452enisa_euvdEU
Microsoft Windows 10 Version 20H210.0.0 → 10.0.19042.1466enisa_euvdEU
Microsoft Windows 10 Version 21H110.0.0 → 10.0.19043.1466enisa_euvdEU
Microsoft Windows 10 Version 21H210.0.19043.0 → 10.0.19044.1466enisa_euvdEU
Microsoft Windows 11 version 21H210.0.0 → 10.0.22000.434enisa_euvdEU
Microsoft Windows Server 201910.0.17763.0 → 10.0.17763.2452enisa_euvdEU
Microsoft Windows Server 2019 (Server Core installation)10.0.17763.0 → 10.0.17763.2452enisa_euvdEU
Microsoft Windows Server 202210.0.20348.0 → 10.0.20348.469enisa_euvdEU
Microsoft Windows Server version 20H210.0.0 → 10.0.19042.1466enisa_euvdEU
Microsoft Corp Windows 10 1809all versionsfstec_bduRU
Microsoft Corp Windows 10 20H2all versionsfstec_bduRU
Microsoft Corp Windows 10 21H1all versionsfstec_bduRU
Microsoft Corp Windows 10 21H2all versionsfstec_bduRU
Microsoft Corp Windows 11all versionsfstec_bduRU
Microsoft Corp Windows Server 2019all versionsfstec_bduRU
Microsoft Corp Windows Server 2019 (Server Core installation)all versionsfstec_bduRU
Microsoft Corp Windows Server 2022all versionsfstec_bduRU
Microsoft Corp Windows Server 2022 (Server Core installation)all versionsfstec_bduRU
Microsoft Corp Windows Server 20H2 (Server Core Installation)all versionsfstec_bduRU

showing 20 of 64

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2022-21907HTTP Protocol Stack Remote Code Execution Vulnerability2022-01-11csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu msrc_csaf NVD CVE.org MITRE

published 2022-01-11modified 2026-06-17

references (13)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan