CVE-2022-21877

mediumpriority · track · 31EPSS 0.029 · 87 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

2.89% (87th) EPSS

CVSS 4.9 · medium

Is it mine?

73 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

Storage Spaces Controller Information Disclosure 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 1909 for 32-bit Systemsmsrc_csaf
10.0.18363.2037:Security Update:https://support.microsoft.com/help/5009545
https://support.microsoft.com/help/5009545
FixedWindows 10 Version 1909 for ARM64-based Systemsmsrc_csaf
10.0.18363.2037:Security Update:https://support.microsoft.com/help/5009545
https://support.microsoft.com/help/5009545
FixedWindows 10 Version 1909 for x64-based Systemsmsrc_csaf
10.0.18363.2037:Security Update:https://support.microsoft.com/help/5009545
https://support.microsoft.com/help/5009545
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.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.9mediumAV:L/AC:L/Au:N/C:C/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 6.9

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Csecondary · ENISA EU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · secure@microsoft.com USexploitability 1.8 · impact 3.6

v3.15.2mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Psecondary · CVSS-BT (t0sche)

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-125USprimaryCWE-125US

exploits (1)

Public proof-of-concept and weaponised exploit code.

Big5-sec/cve-2022-21877a demonstration PoC for CVE-2022-21877 (storage spaces controller memory leak)PoC · poc_in_github

affected products (73)

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 190910.0.0 → 10.0.18363.2037enisa_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 1909all 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

showing 20 of 73

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2022-21877Storage Spaces Controller Information Disclosure 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 (6)

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

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+11870 more

references (10)

External citations — patches, advisories, analysis.

scry

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