CVE-2026-45454: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45454) involves improper limitation of a pathname to a restricted directory (CWE-22) in Microsoft SharePoint Enterprise Server 2016. An authorized attacker can exploit this flaw to execute code remotely over the network. The vulnerability affects version 16.0.0 of the product. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute code remotely on the affected SharePoint server, potentially leading to unauthorized actions or compromise of the system. The confidentiality impact is high, while integrity and availability impacts are not indicated.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45454 to remediate this vulnerability.
CVE-2026-45454: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Microsoft SharePoint Enterprise Server 2016
Microsoft
Microsoft SharePoint Server 2019
Microsoft
Microsoft SharePoint Server Subscription Edition
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45454) involves improper limitation of a pathname to a restricted directory (CWE-22) in Microsoft SharePoint Enterprise Server 2016. An authorized attacker can exploit this flaw to execute code remotely over the network. The vulnerability affects version 16.0.0 of the product. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute code remotely on the affected SharePoint server, potentially leading to unauthorized actions or compromise of the system. The confidentiality impact is high, while integrity and availability impacts are not indicated.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45454 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:06:43.096Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45454","vendor":"Microsoft"}]
Threat ID: 6a284cd78dd33fbd85664bfb
Added to database: 06/09/2026, 17:26:47 UTC
Last enriched: 08/14/2026, 13:32:42 UTC
Last updated: 09/14/2026, 22:01:34 UTC
Views: 233
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