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Full vulnerability report · 2022
CVE-2022-33631High confidence

Microsoft Excel Security Feature Bypass Vulnerability

Microsoft · Microsoft Office 2019

7.3HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
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-2022-36674

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 actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

Microsoft Excel Security Feature Bypass Vulnerability

What

Microsoft Excel Security Feature Bypass Vulnerability

Why

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Microsoft Excel Security Feature Bypass Vulnerability

Why

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

How

An attacker operating through local access may attempt exploitation with low privileges. 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
local access → Protection Mechanism Failure → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
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: a standard category for the underlying weakness.
CWE-693 ↗

CWE-693: Protection Mechanism Failure. The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

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:R/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.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
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-693
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-732Multiples vulnérabilités dans les produits Microsoft

De multiples vulnérabilités ont été corrigées dans les produits Microsoft . Elles permettent à un attaquant de provoquer un contournement de la fonctionnalité de sécurité, une élévation de privilèges, un déni de service, une atteinte à la confidentialité des données et une exécution de code à distance.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-728Multiples vulnérabilités dans Microsoft Office

De multiples vulnérabilités ont été corrigées dans Microsoft Office . Elles permettent à un attaquant de provoquer un déni de service, un contournement de la fonctionnalité de sécurité et une exécution de code à distance.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-002284複数の Microsoft 製品におけるセキュリティ機能を回避される脆弱性

Microsoft 365 Apps、Excel、Office には、Microsoft Excel に不備があるため、セキュリティ機能を回避される脆弱性が存在します。

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

IX Studio 정보 공개 취약성 Windows Secure Boot CVE-2022-34303 CERT/CC: CVE-20220-34303 Crypto Pro 부팅 로더 바이패스 Windows Secure Boot CVE-2022-34302 CERT/CC: CVE-2022-34302 New Horizon Data Systems Inc 부팅 로더 바이패스 Windows Secure Boot CVE-2022-34301 CERT/CC: CVE-2022-34301 Eurosoft 부팅 로더 바이패스 Windows Partition Management Driver CVE-2022-33670 Windows 파티션 관리 드라이버 권한 상승 취약성 Microsoft Office Excel CVE-2022-33648 Microsoft Excel 원격 코드 실행 취약성 Azure Batch Node Agent CVE-2022-33646 Azure Batch 노드 에이전트 원격 코드 실행 취약성 System Center Operations Manager CVE-2022-33640 System Center Operations Manager: OMI(Open Management Infrastructure) 권한 상승 취약성 Microsoft Office Excel CVE-2022-33631 Microsoft Excel 보안 기능 우회 취약성 Windows Kernel CVE-2022-30197 Windows 커널 정보 유출 취약성 Windows WebBrowser Control CVE-2022-30194 Windows WebBrowser 컨트롤 원격 코드 실행 취약성 Azure Real Time Operating System CVE-2022-30176 Azure RTOS GUIX Studio 원격 코드 실행 취약성 Azure Real Time Operating System CVE-2022-30175 Azure RTOS GUIX Studio 원격 코드 실행 취약성 Windows Bluetooth Service CVE-2022-30144 Windows Bluetooth 서비스 원격 코드 실행 취약성 Microsoft Exchange Server CVE-2022-30134 Microsoft Exchange 정보 유출 취약성 Windows Point-to-Point Tunneling Protocol CVE-2022-30133 Windows PPP(지점 간 프로토콜) 원격 코드 실행 취약성 .NET Framework CVE-2022-30130 .NET Framework 서비스 거부 취약성 .NET Framework CVE-2022-2683

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 Office 2019: 19.0.0 < https://aka.ms/OfficeSecurityReleases
  • Microsoft 365 Apps for Enterprise: 16.0.1 < https://aka.ms/OfficeSecurityReleases
  • Microsoft Office LTSC 2021: 16.0.1 < https://aka.ms/OfficeSecurityReleases
  • Microsoft Excel 2016: 16.0.0.0 < 16.0.14931.20612
  • Microsoft Excel 2013 Service Pack 1: 15.0.0.0 < 15.0.5475.1001
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. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 9 Aug 2022 · Last source change 5 Jun 2025, 18:48 UTC · CWE-693 · Protection Mechanism Failure

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-2022-36674
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-2022-36674↗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-2022-33631 · cve.blacktree.nl