SARA / Free Tools / CVE / CVE-2023-33157

CVE-2023-33157 — Microsoft SharePoint Remote Code Execution Vulnerability

Microsoft SharePoint Remote Code Execution Vulnerability

CVSS

8.8 HIGH

EPSS

6.25% (top 9.20%)

CWE

—

Published

2023-07-11T17:03:08.566Z

Last modified

2025-02-28T20:46:18.784Z

CVSS vector

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

01What is this vulnerability?

Microsoft SharePoint Remote Code Execution Vulnerability

Vendor	Product	Versions
Microsoft	Microsoft SharePoint Enterprise Server 2016	16.0.0
Microsoft	Microsoft SharePoint Server 2019	16.0.0
Microsoft	Microsoft SharePoint Server Subscription Edition	16.0.0

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33157

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