CVE-2022-44713Network attack vector

Content spoofing through an undisclosed mechanism

Published Dec 13, 2022 · Updated Jul 22, 2025

Spoofing in Microsoft Outlook for Mac in affected Office 2019 and LTSC 2021 builds allows remote attackers to alter content integrity. Microsoft has not published the affected message-processing locus or the operation that improperly accepts untrusted content. Network access without authentication or user interaction is sufficient, and the published impact is limited to integrity.

CVSS severity7.5
High
EPSS probability1.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft Outlook for Mac in affected Office 2019 and LTSC 2021 builds allows remote attackers to alter content integrity. Microsoft has not published the affected message-processing locus or the operation that improperly accepts untrusted content. Network access without authentication or user interaction is sufficient, and the published impact is limited to integrity.

The record

CVE
CVE-2022-44713
Published
Dec 13, 2022
Updated
Jul 22, 2025
Vendor
Microsoft
Product
Microsoft Office LTSC for Mac 2021
Classifications
CWE-290
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 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=16.0.1 <16.68.22121100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Office LTSC for Mac 2021version=16.0.1 <16.68.22121100
Microsoft · Microsoft Office 2019 for Macversion=16.0.0 <16.68.22121100

Published CVSS scores

7.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing

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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