CVE-2026-54108
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk49th percentile - higher than 49% of all known CVEs
Summary
A vulnerability in Microsoft Office SharePoint allows an authorized attacker to control file names or paths, enabling network spoofing. The issue stems from external control over these parameters.
Risk Assessment
The organization is at risk of spoofing attacks that could impersonate trusted sources or manipulate data in SharePoint. This may lead to loss of information integrity and user trust.
Recommendation
Apply the security update provided by Microsoft for Microsoft Office SharePoint immediately. Additionally, restrict user permissions and monitor unusual file-related requests.
Other vulnerabilities in Microsoft Office SharePoint
See all- CVE-2026-97783High
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- CVE-2026-96044High
A vulnerability with no assigned CWE in Microsoft Office SharePoint allows an authenticated attacker to elevate privileges over a network. The flaw enables privilege escalation within the SharePoint environment.
- CVE-2026-88206High
Server-side request forgery (SSRF) in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
- CVE-2026-88204High
Cross-site scripting (XSS) vulnerability in Microsoft Office SharePoint due to improper input neutralization during web page generation. Allows an authorized attacker to perform spoofing over a network.
- CVE-2026-88200High
Privilege context switching error in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. The issue involves improper security context management.
- CVE-2026-88198High
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network. The issue stems from improper access permission verification.
- CVE-2026-88166High
Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- CVE-2026-88163High
Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- CVE-2026-88155High
Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- CVE-2026-85900High
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Original NVD description (English source)
External control of file name or path in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS