CVE-2022-24510

Code execution via EMF record type confusion

Published Mar 9, 2022 · Updated Jul 8, 2025

Type confusion in Microsoft Office Visio allows remote attackers to execute code through a crafted EMF image opened by a user. The EMR_COMMENT_EMFPLUS record parser fails to validate user-supplied data before treating it as an expected object type. Exploitation requires a user to visit a malicious page or open a malicious file, and resulting code runs in the current Visio process.

CVSS severity7.8
High
EPSS probability2.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in Microsoft Office Visio allows remote attackers to execute code through a crafted EMF image opened by a user. The EMR_COMMENT_EMFPLUS record parser fails to validate user-supplied data before treating it as an expected object type. Exploitation requires a user to visit a malicious page or open a malicious file, and resulting code runs in the current Visio process.

The record

CVE
CVE-2022-24510
Published
Mar 9, 2022
Updated
Jul 8, 2025
Vendor
Microsoft
Product
Microsoft Office 2019
Classifications
T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 8, 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 privilegesunauthenticated

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

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002Malicious File

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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