CVE-2022-29108Network attack vector

Authenticated code execution via chart deserialization

Published May 10, 2022 · Updated Jan 2, 2025

Deserialization in chart processing in Microsoft SharePoint Server allows remote authenticated users to execute arbitrary code. Tampered client-side chart data is deserialized without adequate trust validation, causing attacker-controlled data to be processed by the SharePoint web server process. A valid SharePoint account and network access to the affected installation are required; successful exploitation runs code in the web server process context.

CVSS severity8.8
High
EPSS probability11.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in chart processing in Microsoft SharePoint Server allows remote authenticated users to execute arbitrary code. Tampered client-side chart data is deserialized without adequate trust validation, causing attacker-controlled data to be processed by the SharePoint web server process. A valid SharePoint account and network access to the affected installation are required; successful exploitation runs code in the web server process context.

The record

CVE
CVE-2022-29108
Published
May 10, 2022
Updated
Jan 2, 2025
Vendor
Microsoft
Product
Microsoft SharePoint Foundation 2013
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 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=15.0.0 <15.0.5449.1000

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft SharePoint Foundation 2013version=15.0.0 <15.0.5449.1000
Microsoft · Microsoft SharePoint Enterprise Server 2016version=16.0.0 <16.0.5317.1000
Microsoft · Microsoft SharePoint Server 2019version=16.0.0 <16.0.10386.20011
Microsoft · Microsoft SharePoint Server Subscription Editionversion=16.0.0 <16.0.14931.20286

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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