Microsoft Office SharePoint
CVE-2026-54108 — Microsoft SharePoint Server Spoofing Vulnerability
Executive Summary
External control of file name or path in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Overview
6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.7
EPSS Score
0.00775
probability of exploitation in the next 30 days
0.52624 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
3 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 | 5002891 (Security Update) |
Important | Spoofing | Maybe |
| Microsoft SharePoint Server 2019 | 5002883 (Security Update) |
Important | Spoofing | Maybe |
| Microsoft SharePoint Server Subscription Edition | 5002882 (Security Update) |
Important | Spoofing | Maybe |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
5002891 |
Security Update | Maybe |
5002883 |
Security Update | Maybe |
5002882 |
Security Update | Maybe |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
Piotr Bazydło (@chudypb)
41ae55e9310ff27fa6f26af4727e5590
References
On This Page