Authenticated service interruption via heap buffer overflow
Published Jun 13, 2023 · Updated Feb 28, 2025
Heap-based buffer overflow in Microsoft SharePoint Server allows remote authenticated users to interrupt service through network requests. Microsoft identifies the weakness but has not published the affected routine, request field, or corrupting operation. A low-privileged authenticated account is required; successful exploitation affects availability only and can interrupt the SharePoint service.
Summary
What happened
Heap-based buffer overflow in Microsoft SharePoint Server allows remote authenticated users to interrupt service through network requests. Microsoft identifies the weakness but has not published the affected routine, request field, or corrupting operation. A low-privileged authenticated account is required; successful exploitation affects availability only and can interrupt the SharePoint service.
The record
- CVE
- CVE-2023-33129
- Published
- Jun 13, 2023
- Updated
- Feb 28, 2025
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Enterprise Server 2016
- Classifications
- CWE-122, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 13, 2023CVE publishedPublication date reported by the CVE source.
- Feb 28, 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.
- Affected versionversion=16.0.0 <16.0.5400.1001
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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