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CVE-2026-33112

37
FAUCET Score

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

First published: May 12, 2026Last modified: May 12, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 16.0.19725.20280CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.30%
Probability of exploitation in next 30 days
EPSS Percentile
81.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0230 is in the 80th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016Fixed in: 16.0.5552.1002
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server 2019Fixed in: 16.0.10417.20128
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server Subscription EditionFixed in: 16.0.19725.20280
View patch
microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2026-May/CVE-2026-33112Important

Microsoft SharePoint Server Remote Code Execution Vulnerability

May 12, 2026

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2026-33112
Vendor Advisory