CVE-2022-21849 — Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability

Executive Summary

None

Overview

9.8

CVSS CRITICAL

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Remote Code Execution

Released Jan 11 2022

Last Updated Jan 11 2022

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.06242 — 0.92805 percentile

NVD CVSS 9.8 CRITICAL — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

ATTACK VECTOR

Network

ATTACK COMPLEXITY

Low

PRIVILEGES REQUIRED

None

USER INTERACTION

None

SCOPE

Unchanged

CONFIDENTIALITY

High

INTEGRITY

High

AVAILABILITY

High

EXPLOIT CODE MATURITY

Unproven

REMEDIATION LEVEL

Official Fix

REPORT CONFIDENCE

Confirmed

Temporal Score: 8.5

EPSS Score

0.06242

probability of exploitation in the next 30 days

0.92805 percentile - updated 2026-07-25

View on FIRST.org

Affected Products

27 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`5009585 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 for x64-based Systems	`5009585 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for 32-bit Systems	`5009546 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1607 for x64-based Systems	`5009546 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1809 for 32-bit Systems	`5009557 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1809 for ARM64-based Systems	`5009557 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1809 for x64-based Systems	`5009557 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1909 for 32-bit Systems	`5009545 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1909 for ARM64-based Systems	`5009545 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 1909 for x64-based Systems	`5009545 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 20H2 for 32-bit Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 20H2 for ARM64-based Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H1 for 32-bit Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H1 for ARM64-based Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H1 for x64-based Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for 32-bit Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for ARM64-based Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 10 Version 21H2 for x64-based Systems	`5009543 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 version 21H2 for ARM64-based Systems	`5009566 (Security Update)`	Important	Remote Code Execution	Yes
Windows 11 version 21H2 for x64-based Systems	`5009566 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2016	`5009546 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2016 (Server Core installation)	`5009546 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2019	`5009557 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2019 (Server Core installation)	`5009557 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2022	`5009555 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server 2022 (Server Core installation)	`5009555 (Security Update)`	Important	Remote Code Execution	Yes
Windows Server, version 20H2 (Server Core Installation)	`5009543 (Security Update)`	Important	Remote Code Execution	Yes

Patches

7 patches

Article	Type	Restart
`5009585`	Security Update	Yes
`5009546`	Security Update	Yes
`5009557`	Security Update	Yes
`5009545`	Security Update	Yes
`5009543`	Security Update	Yes
`5009566`	Security Update	Yes
`5009555`	Security Update	Yes

Patch Diff

ghidriff · ikeext.dll (KB5009566)

Patch diff 10.0.22000.318 -> 10.0.22000.434 (IKEv2 DoS-cookie/notify path rework)

Pre-patch version 10.0.22000.318

Post-patch version 10.0.22000.434

Function	Address	Change	Note
`WPP_SF_iSqq`	`180066c64 -> 180066f44`	refcount, address	similarity 1.0
`IkeFreeMMSA`	`18002f070 -> 18002f300`	code, length, sig, address	similarity 0.44
`IkeVerifyDosCookieIkeV2`	`1800d026c -> 1800d0a48`	code, length, sig, address, called	similarity 0.31
`IkeLookupVendorId`	`180025220 -> 180025240`	code, refcount, length, sig, address, called	similarity 0.21
`_tlgKeywordOn`	`1800011f8`	refcount, calling	similarity 1.0
`IkeHandleErrorNotifyIkeV2`	`1800c95b4 -> 1800c9894`	code, length, sig, address, called	similarity 0.26
`IkeFindMMPolicy`	`180026380 -> 180026610`	code, length, sig, address	similarity 0.67
`_tlgCreate1Sz_wchar_t`	`18000112c`	refcount, calling	similarity 1.0
`IkeQueueRecvRequest`	`18003e3d8 -> 18003e698`	code, length, address, called	similarity 0.86
`IkeProcessPacketDispatch`	`180026f80 -> 180027210`	code, length, sig, address	similarity 0.31
`IkeReceiveCallback`	`180035500 -> 180035790`	code, length, address, called	similarity 0.4
`WfpReportAppErrorAsWinError`	`180042458 -> 180042748`	refcount, address, calling	similarity 1.0
`_tlgCreate1Sz_char`	`1800010f8`	refcount, calling	similarity 1.0
`IkeDoingIkeV2`	`18002dcc0 -> 18002df50`	refcount, address, calling	similarity 1.0
`IkeHandleQMPacketDispatchIkeV2`	`1800b31d4 -> 1800b34b4`	length, address	similarity 0.91
`IkeGetTlsPeerAddr`	`180044310 -> 180044600`	refcount, address, calling	similarity 1.0
`__GSHandlerCheck`	`18004bad8 -> 18004bdb8`	refcount, address	similarity 1.0
`IkeHandleStatusNotifyIkeV2`	`1800cb3d0 -> 1800cb8d8`	code, length, address, called	similarity 0.46
`IkeVerifyPacketHeader`	`180036040 -> 180036300`	code, length, sig, address, called	similarity 0.35
`MicrosoftTelemetryAssertTriggeredNoArgs`	`18004a680 -> 18004a96c`	refcount, address	similarity 1.0
`_tlgWriteTransfer_EtwEventWriteTransfer`	`180001224`	refcount, calling	similarity 1.0
`IkeProcessNotifyPayloadGroupIkeV2`	`1800ce20c -> 1800ce9e8`	code, length, address	similarity 0.96
`IkeHandlePayloadMMVendorId`	`1800f3230 -> 1800f3b10`	code, length, address	similarity 0.92
`WPP_SF_iS`	`180052890 -> 180052b70`	refcount, address, calling	similarity 1.0
`IkeGetTlsMmLuid`	`180052f8c -> 18005326c`	refcount, address, calling	similarity 1.0
`WPP_SF_iSD`	`180052918 -> 180052bf8`	refcount, address, calling	similarity 1.0
`IkeHandleNotifyIkeV2`	`1800caacc -> 1800caec0`	code, length, sig, address, called	similarity 0.2
`IkeInitMMResponderPhase1`	`180024050`	code, length	similarity 0.44
`IkeIsVendorIdPresent`	`1800408e8 -> 180040be0`	code, length, sig, address	similarity 0.73
`WfpReportSysErrorAsWinError`	`180042468 -> 180042758`	refcount, address, calling	similarity 1.0
`WPP_SF_iSsdd`	`18004a578 -> 18004a868`	code, refcount, length, sig, address	similarity 0.95
`IkeAddrDump`	`18002a670 -> 18002a900`	code, length, sig, address	similarity 0.5

View full diff report View RCA report Download PoC

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

Polar Bear

References

MSRC Advisory MITRE NVD