CVE-2023-29333

Local application interruption through undisclosed mechanism

Published May 9, 2023 · Updated Jul 10, 2025

Denial of service in Microsoft Access in affected Office 2019, Office LTSC 2021, and Microsoft 365 Apps builds allows local users to interrupt Access. Microsoft has not published the vulnerable code path or the operation that mishandles input or resources. Exploitation requires local low-privilege access and affects availability only; the public record does not distinguish a hang from a crash.

CVSS severity3.3
Low
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Access in affected Office 2019, Office LTSC 2021, and Microsoft 365 Apps builds allows local users to interrupt Access. Microsoft has not published the vulnerable code path or the operation that mishandles input or resources. Exploitation requires local low-privilege access and affects availability only; the public record does not distinguish a hang from a crash.

The record

CVE
CVE-2023-29333
Published
May 9, 2023
Updated
Jul 10, 2025
Vendor
Microsoft
Product
Microsoft Office 2019
Classifications
CWE-400
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=19.0.0 <https://aka.ms/OfficeSecurityReleases

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft Office 2019version=19.0.0 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Office LTSC 2021version=16.0.1 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft 365 Apps for enterpriseversion=16.0.1 <https://aka.ms/OfficeSecurityReleases

Published CVSS scores

3.3Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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