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Full vulnerability report · 2022
CVE-2022-34716High confidence

.NET Spoofing Vulnerability

Microsoft · Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)

5.9MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 2.43% for the current model date.

Compensating controls

  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  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: As exposure requiresRemediation target: Within 365 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.

Open-source package ranges25 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
NuGetMicrosoft.AspNetCore.App.Runtime.linux-armECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-armECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-arm64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-arm64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-armECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-armECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-arm64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-musl-x64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-x64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.linux-x64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.osx-arm64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.osx-x64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.osx-x64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-armECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-armECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-arm64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-arm64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-x64ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-x64ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-x86ECOSYSTEM: introduced 3.1.0; fixed 3.1.283.1.28OSV record ↗aggregator derived · 4 Sep 2025
NuGetMicrosoft.AspNetCore.App.Runtime.win-x86ECOSYSTEM: introduced 6.0.0; fixed 6.0.86.0.8OSV record ↗aggregator derived · 4 Sep 2025
NuGetSystem.Security.Cryptography.XmlECOSYSTEM: introduced 0; fixed 4.7.14.7.1OSV record ↗aggregator derived · 4 Sep 2025
NuGetSystem.Security.Cryptography.XmlECOSYSTEM: introduced 5.0.0; fixed 6.0.16.0.1OSV record ↗aggregator derived · 4 Sep 2025
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-2024-0733

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified
01

What, why and how

.NET Spoofing Vulnerability

What

.NET Spoofing Vulnerability

Why

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

.NET Spoofing Vulnerability

Why

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

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
a network path → Authentication Bypass by Spoofing → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-290 ↗

CWE-290: Authentication Bypass by Spoofing. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-290
A

Official authority intelligence

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

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-730Vulnérabilité dans Microsoft .Net

Une vulnérabilité a été corrigée dans Microsoft .Net . Elle permet à un attaquant de provoquer une usurpation d'identité.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002230.NET および PowerShell におけるなりすまされる脆弱性

.NET および PowerShell には、、.NET に不備があるため、なりすまされる脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5904MS 4월 보안 위협에 따른 정기 보안 업데이트 권고

omium: CVE-2023-1815 네트워킹 API에서 UaF(Use after free) | | Microsoft Edge (Chromium-based) | CVE-2023-1814 | Chromium: CVE-2023-1814 안전 검색에서 신뢰할 수 없는 입력에 대한 불충분한 유효성 검사 | | Microsoft Edge (Chromium-based) | CVE-2023-1813 | Chromium: CVE-2023-1813 확장에서 부적절한 구현 | | Microsoft Edge (Chromium-based) | CVE-2023-1812 | Chromium: CVE-2023-1812 DOM Bindings에서 범위를 벗어난 메모리 액세스 | | Microsoft Edge (Chromium-based) | CVE-2023-1811 | Chromium: CVE-2023-1811 Frames에서 UaF(Use after free) | | Microsoft Edge (Chromium-based) | CVE-2023-1810 | Chromium: CVE-2023-1810 Visuals에서 힙 버퍼 오버플로 | | Windows Netlogon | CVE-2022-38023 | Netlogon RPC 권한 상승 취약성 | | .NET Core | CVE-2022-34716 | .NET 스푸핑 취약성 | | Windows Active Directory | CVE-2022-26923 | Active Directory Domain Services Elevation of Privilege Vulnerability | | WinVerifyTrust Signature Verification | CVE-2013-3900 | WinVerifyTrust 서명 유효 취약성 | ##### □ 작성 : 취약점분석팀

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

5748 HTTP.sys 서비스 거부 취약성 Windows Point-to-Point Tunneling Protocol CVE-2022-35747 Windows PPP(지점 간 프로토콜) 서비스 거부 취약성 Windows Digital Media CVE-2022-35746 Windows 디지털 미디어 수신기 권한 상승 취약성 Windows Secure Socket Tunneling Protocol (SSTP) CVE-2022-35745 Windows SSTP(Secure Socket Tunneling 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 정

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.
Fix not verified
Affected
  • Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8): 15.9.0 < 15.9.50
  • Microsoft Visual Studio 2022 version 17.2: 17.2.0 < 17.2.7
  • Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8): 15.0.0 < 16.9.24
  • Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10): 16.11.0 < 16.11.18
  • Microsoft Visual Studio 2022 version 17.0: 17.0.0 < 17.0.13
  • .NET 6.0: 6.0.0 < 6.0.8
  • .NET Core 3.1: 3.1 < 3.1.28
  • PowerShell 7.0: 7.0.0 < 7.0.12
  • PowerShell 7.2: 7.2.0 < 7.2.6
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 9 Aug 2022 · Last source change 29 May 2025, 20:07 UTC · CWE-290 · Authentication Bypass by Spoofing

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-2024-0733
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2024-0733↗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-2022-34716 · cve.blacktree.nl