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Full vulnerability report · 2022
CVE-2022-34713High confidence

Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Microsoft · Windows

7.8HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2022-08-30 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 9 Aug 2022

Evidence used

  • CISA confirms exploitation in the wild.
  • EPSS is 67.76% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Microsoft Windows and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2022-37663

CISA KEV mirrored by ENISA

Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 9 Aug 2022. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
1 linked advisory record
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2022-08-30 as the remediation due date.

Patch available
01

What, why and how

A remote code execution vulnerability exists when Microsoft Windows MSDT is called using the URL protocol from a calling application.

What

A remote code execution vulnerability exists when Microsoft Windows MSDT is called using the URL protocol from a calling application.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

What

A remote code execution vulnerability exists when Microsoft Windows MSDT is called using the URL protocol from a calling application.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may execute code or commands in the affected security context.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2022-08-09.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → vulnerable operation → execute code or commands in the affected security context
Attack surface
Local
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
UnauthenticatedRemote code executionCISA KEV
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2022-37663Known-exploited evidence recorded

Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability

Official EUVD record ↗
Canadian Centre for Cyber Security · English · AV22-448Microsoft security advisory – August 2022 monthly rollup (AV22-448)

On 9 August 2022, Microsoft published Security Updates to address vulnerabilities in multiple products. Included were critical updates for the following: Microsoft has indicated that CVE-2022-34713 has been actively exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220810Security Bulletin 10 Aug 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 10 Aug 2022, published on 10 August 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-729Multiples vulnérabilités dans Microsoft Windows

022-34707 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34707 Bulletin de sécurité Microsoft CVE-2022-34708 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34708 Bulletin de sécurité Microsoft CVE-2022-34709 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34709 Bulletin de sécurité Microsoft CVE-2022-34710 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34710 Bulletin de sécurité Microsoft CVE-2022-34712 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34712 Bulletin de sécurité Microsoft CVE-2022-34713 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34713 Bulletin de sécurité Microsoft CVE-2022-34714 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34714 Bulletin de sécurité Microsoft CVE-2022-34715 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34715 Bulletin de sécurité Microsoft CVE-2022-35743 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35743 Bulletin de sécurité Microsoft CVE-2022-35744 du 09 août 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35744 Bulletin de sécurité Microsoft CVE-2022-

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002234複数の Microsoft Windows 製品におけるリモートでコードを実行される脆弱性

複数の Microsoft Windows 製品には、Microsoft Windows Support Diagnostic Tool (MSDT)に不備があるため、リモートでコードを実行される脆弱性があります。 本脆弱性は、CVE-2022-35743 とは異なる脆弱性です。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5693MS 8월 보안 위협에 따른 정기 보안 업데이트 권고

ing Protocol) 원격 코드 실행 취약성 Windows Point-to-Point Tunneling Protocol CVE-2022-35744 Windows PPP(지점 간 프로토콜) 원격 코드 실행 취약성 Microsoft Windows Support Diagnostic Tool (MSDT) CVE-2022-35743 MSDT(Microsoft Windows 지원 진단 도구) 원격 코드 실행 취약성 Microsoft Office Outlook CVE-2022-35742 Microsoft Outlook 서비스 거부 취약성 Microsoft Office CVE-2022-34717 Microsoft Office 원격 코드 실행 취약성 .NET Core CVE-2022-34716 .NET 스푸핑 취약성 Windows Network File System CVE-2022-34715 Windows Network 파일 시스템 원격 코드 실행 취약성 Windows Secure Socket Tunneling Protocol (SSTP) CVE-2022-34714 Windows SSTP(Secure Socket Tunneling Protocol) 원격 코드 실행 취약성 Microsoft Windows Support Diagnostic Tool (MSDT) CVE-2022-34713 MSDT(Microsoft Windows 지원 진단 도구) 원격 코드 실행 취약성 Windows Defender Credential Guard CVE-2022-34712 Windows Defender Credential Guard 정보 공개 취약성 Windows Defender Credential Guard CVE-2022-34710 Windows Defender Credential Guard 정보 공개 취약성 Windows Defender Credential Guard CVE-2022-34709 Windows Defender Credential Guard 보안 기능 우회 취약성 Windows Kernel CVE-2022-34708 Windows 커널 정보 유출 취약성 Windows Kernel CVE-2022-34707 Windows 커널 권한 상승 취약성 Windows Local Security Authority (LSA) CVE-2022-34706 Windows LSA(로컬 보안 기관) 권한 상승 취약성 Windows Defender Credential Guard CVE-2022-34705 Windows Defender 원격 Credential Guard 권한 상승 취약성 Windows Defender Credential Guard CVE

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5689현재 악용되고 있는 Exploit(Update. 2022-08-09)

A remote code execution vulnerability exists when Microsoft Windows MSDT is called using the URL protocol from a calling application.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 9 Aug 2022 · Last source change 21 Oct 2025, 23:15 UTC · CWE not yet assigned

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2022-37663
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD enriched

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    10.0.17763.0 < 10.0.17763.3287; 10.0.0 < 10.0.17763.3287; 10.0.0 < 10.0.19043.1889; 10.0.20348.0 < 10.0.20348.887; 10.0.0 < 10.0.19042.1889 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    Windows 10 Version 1809: 10.0.17763.0 < 10.0.17763.3287, 10.0.0 < 10.0.17763.3287; Windows Server 2019: 10.0.17763.0 < 10.0.17763.3287; Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.3287; Windows 10 Version 21H1: 10.0.0 < 10.0.19043.1889; Windows Server 2022: 10.0.20348.0 < 10.0.20348.887; Windows 10 Version 20H2: 10.0.0 < 10.0.19042.1889; Windows Server version 20H2: 10.0.0 < 10.0.19042.1889; Windows 11 version 21H2: 10.0.0 < 10.0.22000.856; Windows 10 Version 21H2: 10.0.19043.0 < 10.0.19044.1889; Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.19387; Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.5291; Windows Server 2016: 10.0.14393.0 < 10.0.14393.5291; Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.5291; Windows 7: 6.1.0 < 6.1.7601.26065; Windows 7 Service Pack 1: 6.1.0 < 6.1.7601.26065; Windows 8.1: 6.3.0 < 6.3.9600.20520; Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.26065; Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.26065; Windows Server 2012: 6.2.9200.0 < 6.2.9200.23817; Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.23817; Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.20520; Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.20520 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2022-37663↗CISA KEV record↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2022-34713 · cve.blacktree.nl