CVE-2022-23253Public exploitNetwork attack vector

System crash via malformed PPTP control packet

Published Mar 9, 2022 · Updated Jul 8, 2025

Denial of service in Microsoft Windows PPTP allows remote authenticated users to crash affected systems with malformed traffic. The rasppptp.sys driver passes a null CallParameters pointer into NdisMCmActivateVc while processing a crafted PPTP control packet, causing a kernel null-pointer dereference. Exploitation requires PPTP reachability and authenticated VPN access; a successful request forces a system crash and reboot.

CVSS severity6.5
Medium
EPSS probability56.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows PPTP allows remote authenticated users to crash affected systems with malformed traffic. The rasppptp.sys driver passes a null CallParameters pointer into NdisMCmActivateVc while processing a crafted PPTP control packet, causing a kernel null-pointer dereference. Exploitation requires PPTP reachability and authenticated VPN access; a successful request forces a system crash and reboot.

The record

CVE
CVE-2022-23253
Published
Mar 9, 2022
Updated
Jul 8, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 <10.0.10240.19235

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.19235
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.2686
Microsoft · Windows 7version=6.1.0 <6.1.7601.25898
Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.1586
Microsoft · Windows 10 Version 1909version=10.0.0 <10.0.18363.2158
Microsoft · Windows 8.1version=6.3.0 <6.3.9600.20303
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.5006
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.556
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.23645
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.23645
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.1586
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.5006
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.25898
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.1586
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.25898
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.20303
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.2686
Microsoft · Windows 7 Service Pack 1version=6.1.0 <6.1.7601.25898
Microsoft · Windows Server version 20H2version=10.0.0 <10.0.19042.1586
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.5006
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.587
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.2686; version=10.0.17763.0 <10.0.17763.2686
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.20303

Published CVSS scores

6.5MicrosoftCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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