CVE-2022-30173

Code execution after crafted file opening

Published Jun 15, 2022 · Updated Jan 2, 2025

Remote code execution in Microsoft Excel and Office Web Apps Server allows attackers to run code after a user opens a crafted file. Microsoft has not published the affected parser, file feature, or unsafe operation that triggers code execution. Exploitation requires user interaction with attacker-supplied content and executes code in the context of the affected application.

CVSS severity7.8
High
EPSS probability2.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in Microsoft Excel and Office Web Apps Server allows attackers to run code after a user opens a crafted file. Microsoft has not published the affected parser, file feature, or unsafe operation that triggers code execution. Exploitation requires user interaction with attacker-supplied content and executes code in the context of the affected application.

The record

CVE
CVE-2022-30173
Published
Jun 15, 2022
Updated
Jan 2, 2025
Vendor
Microsoft
Product
Microsoft Excel 2016
Classifications
T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 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=16.0.0.0 <16.0.5356.1000

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Excel 2016version=16.0.0.0 <16.0.5356.1000
Microsoft · Microsoft Excel 2013version=15.0.0.0 <15.0.5475.1000
Microsoft · Microsoft Office Web Apps Server 2013version=15.0.1 <15.0.5459.1001

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1204.002User Execution Malicious File
T1203Exploitation for Client Execution

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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