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Full vulnerability report · 2022
CVE-2022-41033High confidence

Microsoft Windows COM+ Event System Service Privilege Escalation Vulnerability

Microsoft · Windows COM+ Event System Service

7.8HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2022-11-01 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 11 Oct 2022

Evidence used

  • CISA confirms exploitation in the wild.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 1.70% 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 COM+ Event System Service 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-2022-44278

CISA KEV mirrored by ENISA

Windows COM+ Event System Service Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 11 Oct 2022. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
2 linked advisory records
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2022-11-01 as the remediation due date.

Patch available
01

What, why and how

Microsoft Windows COM+ Event System Service contains an unspecified vulnerability that allows for privilege escalation.

What

Microsoft Windows COM+ Event System Service contains an unspecified vulnerability that allows for privilege escalation.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

How

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

What

Microsoft Windows COM+ Event System Service contains an unspecified vulnerability that allows for privilege escalation.

Why

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

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 2022-10-11.

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 → Access of Resource Using Incompatible Type ('Type Confusion') → 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-843 ↗

CWE-843: Access of Resource Using Incompatible Type ('Type Confusion'). The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

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-843CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2022-44278Known-exploited evidence recorded

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Official EUVD record ↗
BSI · German · WID-SEC-2022-1682Microsoft Windows und Microsoft Windows Server: Mehrere Schwachstellen

Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Microsoft Windows und Microsoft Windows Server ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial of Service Zustand herzustellen und Informationen falsch darzustellen.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV22-570Microsoft security advisory – October 2022 monthly rollup (AV22-570)

On 11 October 2022, Microsoft published Security Updates to address vulnerabilities in multiple products. Included were critical updates for the following: Microsoft has indicated that CVE-2022-41033 has been actively exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20221012Security Bulletin 12 Oct 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 12 Oct 2022, published on 12 October 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-907Multiples vulnérabilités dans Microsoft Windows

octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38045 Bulletin de sécurité Microsoft CVE-2022-38046 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38046 Bulletin de sécurité Microsoft CVE-2022-38047 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38047 Bulletin de sécurité Microsoft CVE-2022-38050 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38050 Bulletin de sécurité Microsoft CVE-2022-38051 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-38051 Bulletin de sécurité Microsoft CVE-2022-41033 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41033 Bulletin de sécurité Microsoft CVE-2022-41081 du 11 octobre 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41081 Référence CVE CVE-2022-22035 https://www.cve.org/CVERecord?id=CVE-2022-22035 Référence CVE CVE-2022-24504 https://www.cve.org/CVERecord?id=CVE-2022-24504 Référence CVE CVE-2022-30198 https://www.cve.org/CVERecord?id=CVE-2022-30198 Référence CVE CVE-2022-33634 https://www.cve.org/CVERecord?id=CVE-2022-33634 Référence CVE CVE-2022-33635 https://www.cve.org/CVERecord?id=CVE-2022-33635 Référence CVE CVE-2022-33645 https://www.c

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002497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 COM + イベントシステムサービスに不備があるため、権限を昇格される脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5744MS 10월 보안 위협에 따른 정기 보안 업데이트 권고

품 카테고리 CVE 번호 CVE 제목 Visual Studio Code CVE-2022-41083 Visual Studio Code 권한 상승 취약성 Windows Point-to-Point Tunneling Protocol CVE-2022-41081 Windows 지점 간 터널링 프로토콜 원격 코드 실행 취약성 Microsoft Office CVE-2022-41043 Microsoft Office 정보 유출 취약성 Visual Studio Code CVE-2022-41042 Visual Studio Code 정보 유출 취약성 Microsoft Office SharePoint CVE-2022-41038 Microsoft SharePoint Server 원격 코드 실행 취약성 Microsoft Office SharePoint CVE-2022-41037 Microsoft SharePoint Server 원격 코드 실행 취약성 Microsoft Office SharePoint CVE-2022-41036 Microsoft SharePoint Server 원격 코드 실행 취약성 Visual Studio Code CVE-2022-41034 Visual Studio Code 원격 코드 실행 취약성 Windows COM+ Event System Service CVE-2022-41033 Windows COM+ 이벤트 시스템 서비스 권한 상승 취약성 NuGet Client CVE-2022-41032 NuGet 클라이언트 권한 상승 취약성 Microsoft Office Word CVE-2022-41031 Microsoft Word 원격 코드 실행 취약성 Microsoft Office SharePoint CVE-2022-38053 Microsoft SharePoint Server 원격 코드 실행 취약성 Microsoft Graphics Component CVE-2022-38051 Windows 그래픽 구성 요소 권한 상승 취약성 Windows Win32K CVE-2022-38050 Win32k 권한 상승 취약성 Microsoft Office Word CVE-2022-38049 Microsoft Office 그래픽 원격 코드 실행 취약성 Microsoft Office CVE-2022-38048 Microsoft Office 원격 코드 실행 취약성 Windows Point-to-Point Tunneling Protocol CVE-2022-38047 Windows 지점 간 터널링 프로토콜 원격 코드 실행 취약성 Windows Web Account Manager CVE-2022-38046 Windows 웹 계정 관리자 정보 유출 취약성 W

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 11 Oct 2022 · Last source change 12 Jan 2026, 20:55 UTC · CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')

CVE recordCVE.org · 5.2
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-2022-44278
Product sourceCISA KEV
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 < 10.0.17763.3532; 10.0.0 < 10.0.17763.3532; 10.0.0 < 10.0.19043.2130; 10.0.20348.0 < 10.0.20348.1129; 10.0.0 < 10.0.19042.2130; 10.0.0 < 10.0.22000.1098 · 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 < 10.0.17763.3532, 10.0.0 < 10.0.17763.3532; Windows Server 2019: 10.0.17763.0 < 10.0.17763.3532; Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.3532; Windows 10 Version 21H1: 10.0.0 < 10.0.19043.2130; Windows Server 2022: 10.0.20348.0 < 10.0.20348.1129; Windows 10 Version 20H2: 10.0.0 < 10.0.19042.2130; Windows 11 version 21H2: 10.0.0 < 10.0.22000.1098; Windows 10 Version 21H2: 10.0.19043.0 < 10.0.19044.2130; Windows 11 version 22H2: 10.0.22621.0 < 10.0.22621.674; Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.19507; Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.5427; Windows Server 2016: 10.0.14393.0 < 10.0.14393.5427; Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.5427; Windows 7: 6.1.0 < 6.1.7601.26174; Windows 7 Service Pack 1: 6.1.0 < 6.1.7601.26174; Windows 8.1: 6.3.0 < 6.3.9600.20625; Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21721; Windows Server 2008 Service Pack 2 (Server Core installation): 6.0.6003.0 < 6.0.6003.21721; Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21721; Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.26174; Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.26174; Windows Server 2012: 6.2.9200.0 < 6.2.9200.23920; Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.23920; Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.20625; Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.20625 · 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-2022-44278↗CISA KEV record↗CVE authority or vendor reference↗Patch or update 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-2022-41033 · cve.blacktree.nl