CVE-2022-23270Public exploitNetwork attack vector

Unauthenticated kernel code execution via call double-free

Published May 10, 2022 · Updated Jan 2, 2025

Remote code execution in Windows PPTP allows remote attackers to execute kernel code through crafted PPTP control traffic. In raspptp.sys, CallGetCall returns a call context after releasing its global lock, allowing concurrent connection cleanup and an error-bearing OutgoingCallReply to free the same object twice. The target must process PPTP calls and the attacker must win a narrow race; demonstrated triggering crashes Windows, while successful heap manipulation enables kernel code execution.

CVSS severity8.1
High
EPSS probability70.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Windows PPTP allows remote attackers to execute kernel code through crafted PPTP control traffic. In raspptp.sys, CallGetCall returns a call context after releasing its global lock, allowing concurrent connection cleanup and an error-bearing OutgoingCallReply to free the same object twice. The target must process PPTP calls and the attacker must win a narrow race; demonstrated triggering crashes Windows, while successful heap manipulation enables kernel code execution.

The record

CVE
CVE-2022-23270
Published
May 10, 2022
Updated
Jan 2, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.19297

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.19297
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.2928
Microsoft · Windows 7version=6.1.0 <6.1.7601.25954
Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.1706
Microsoft · Windows 10 Version 1909version=10.0.0 <10.0.18363.2274
Microsoft · Windows 8.1version=6.3.0 <6.3.9600.20371
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.5125
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.675
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.23714
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.23714
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19043.1706
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.5125
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.25954
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.1706
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.25954
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.20371
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.2928
Microsoft · Windows 7 Service Pack 1version=6.1.0 <6.1.7601.25954
Microsoft · Windows Server version 20H2version=10.0.0 <10.0.19042.1706
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.5125
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.21481
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.707
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.2928; version=10.0.17763.0 <10.0.17763.2928
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.20371
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.21481

Published CVSS scores

8.1MicrosoftCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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