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Full vulnerability report · 2022
CVE-2022-22047High confidence

Microsoft Windows Client Server Runtime Subsystem (CSRSS) Privilege Escalation Vulnerability

Microsoft · Windows

7.8HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2022-08-02 as the remediation due date.

Patch available
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2022-27201

CISA KEV mirrored by ENISA

Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 12 Jul 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 2022-08-02 as the remediation due date.

Patch available
01

What, why and how

Microsoft Windows CSRSS contains an unspecified vulnerability that allows for privilege escalation to SYSTEM privileges.

What

Microsoft Windows CSRSS contains an unspecified vulnerability that allows for privilege escalation to SYSTEM privileges.

Why

The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Microsoft Windows CSRSS contains an unspecified vulnerability that allows for privilege escalation to SYSTEM privileges.

Why

The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

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 2022-07-12.

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 → Untrusted Search Path → gain additional privileges
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
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: a standard category for the underlying weakness.
CWE-426 ↗

CWE-426: Untrusted Search Path. The product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control.

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:L/UI:N/S:U/C:H/I:H/A:H/E:U/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.PRLowPrivileges required: The attacker needs basic user-level 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.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
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Privilege escalationCWE-426CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2022-27201Known-exploited evidence recorded

Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

Official EUVD record ↗
Canadian Centre for Cyber Security · English · AV22-387Microsoft security advisory – July 2022 monthly rollup (AV22-387)

On 12 July 2022 Microsoft published Security Updates to address vulnerabilities in multiple products. Included were critical updates for the following: Microsoft has indicated that CVE-2022-22047 has been actively exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220713Security Bulletin 13 Jul 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 13 Jul 2022, published on 13 July 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-633Multiples vulnérabilités dans Microsoft Windows

juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22040 Bulletin de sécurité Microsoft CVE-2022-22041 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22041 Bulletin de sécurité Microsoft CVE-2022-22042 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22042 Bulletin de sécurité Microsoft CVE-2022-22043 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22043 Bulletin de sécurité Microsoft CVE-2022-22045 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22045 Bulletin de sécurité Microsoft CVE-2022-22047 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22047 Bulletin de sécurité Microsoft CVE-2022-22048 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22048 Bulletin de sécurité Microsoft CVE-2022-22049 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22049 Bulletin de sécurité Microsoft CVE-2022-22050 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22050 Bulletin de sécurité Microsoft CVE-2022-22711 du 12 juillet 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22711 Bulletin de sécurité Micr

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002043複数の Microsoft Windows 製品における権限を昇格される脆弱性

複数の Microsoft Windows 製品には、Windows CSRSS に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2022-22026 および CVE-2022-22049 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002041複数の Microsoft Windows 製品における権限を昇格される脆弱性

複数の Microsoft Windows 製品には、Windows CSRSS に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2022-22026 および CVE-2022-22047 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002019複数の Microsoft Windows 製品における権限を昇格される脆弱性

複数の Microsoft Windows 製品には、Windows CSRSS に不備があるため、権限を昇格される脆弱性が存在します。 本脆弱性は、CVE-2022-22047 および CVE-2022-22049 とは異なる脆弱性です。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5663MS 7월 보안 위협에 따른 정기 보안 업데이트 권고

Site Recovery CVE-2022-33678 Azure Site Recovery 원격 코드 실행 취약성 Azure Site Recovery CVE-2022-26896 Azure Site Recovery 정보 공개 취약성 Azure Storage Library CVE-2022-30187 Azure Storage 라이브러리 정보 공개 취약성 Windows BitLocker CVE-2022-22048 BitLocker 보안 기능 우회 취약성 Open Source Software CVE-2022-27776 HackerOne: CVE-2022-27776 불충분하게 보호된 자격 증명 취약성은 인증 또는 쿠키 헤더 데이터를 유출할 수 있음 Microsoft Office CVE-2022-33632 Microsoft Office 보안 기능 우회 취약성 Visual Studio CVE-2022-24513 Visual Studio 권한 상승 취약성 Windows BitLocker CVE-2022-22711 Windows BitLocker 정보 공개 취약성 Windows Client/Server Runtime Subsystem CVE-2022-22026 Windows CSRSS 권한 상승 Windows Client/Server Runtime Subsystem CVE-2022-22047 Windows CSRSS 권한 상승 Windows Client/Server Runtime Subsystem CVE-2022-22049 Windows CSRSS 권한 상승 Windows Credential Guard CVE-2022-22031 Windows Credential Guard 도메인 조인 공개 키 권한 상승 취약성 Role: DNS Server CVE-2022-30214 Windows DNS 서버 원격 코드 실행 취약성 Windows Fast FAT Driver CVE-2022-22043 Windows Fast FAT File System Driver Elevation of Privilege Vulnerability Role: Windows Fax Service CVE-2022-22024 Windows Fax 서비스 원격 코드 실행 취약성 Role: Windows Fax Service CVE-2022-22027 Windows Fax 서비스 원격 코드 실행 취약성 Microsoft Graphics Component CVE-2022-30213 Windows GDI+ 정보 유출 취약성 Role: Windows Hyper-V CVE-2022-30223 Windows Hyper-V 정보 유출 취약성 Role: Windows Hyper-V CVE

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5662현재 악용되고 있는 Exploit(Update. 2022-07-12)

Microsoft Windows CSRSS contains an unspecified vulnerability which allows for privilege escalation to SYSTEM privileges.

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 12 Jul 2022 · Last source change 21 Oct 2025, 23:15 UTC · CWE-426 · Untrusted Search Path

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-2022-27201
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
NVD statusNVD enriched

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

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 < 10.0.17763.3165; 10.0.0 < 10.0.17763.3165; 10.0.0 < 10.0.19043.1826; 10.0.20348.0 < 10.0.20348.825; 10.0.0 < 10.0.19042.1826 · 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 < 10.0.17763.3165, 10.0.0 < 10.0.17763.3165; Windows Server 2019: 10.0.17763.0 < 10.0.17763.3165; Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.3165; Windows 10 Version 21H1: 10.0.0 < 10.0.19043.1826; Windows Server 2022: 10.0.20348.0 < 10.0.20348.825; Windows 10 Version 20H2: 10.0.0 < 10.0.19042.1826; Windows Server version 20H2: 10.0.0 < 10.0.19042.1826; Windows 11 version 21H2: 10.0.0 < 10.0.22000.795; Windows 10 Version 21H2: 10.0.19043.0 < 10.0.19044.1826; Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.19360; Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.5246; Windows Server 2016: 10.0.14393.0 < 10.0.14393.5246; Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.5246; Windows 7: 6.1.0 < 6.1.7601.26022; Windows 7 Service Pack 1: 6.1.0 < 6.1.7601.26022; Windows 8.1: 6.3.0 < 6.3.9600.20478; Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21569; Windows Server 2008 Service Pack 2 (Server Core installation): 6.0.6003.0 < 6.0.6003.21569; Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21569; Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.26022; Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.26022; Windows Server 2012: 6.2.9200.0 < 6.2.9200.23771; Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.23771; Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.20478; Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.20478 · 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-2022-27201↗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-2022-22047 · cve.blacktree.nl