CVE-2025-53771
Microsoft SharePoint Server Spoofing Vulnerability
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft SharePoint Server Spoofing Vulnerability
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Record
CVE-2025-53771- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2025-22040
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Record
EUVD-2025-22040- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6pmq-337c-gv96
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft...
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
- Record
GHSA-6pmq-337c-gv96- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-20, CWE-287
- Updated
- 2026-11-02
NVD
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Record
CVE-2025-53771- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Microsoft SharePoint Server ToolPane Unauthenticated Remote Code Execution (aka ToolShell) | 2025-07-08 |
| Nuclei | Microsoft SharePoint Server - Authentication Bypass (ToolShell) |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, Metasploit, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-53771 is a medium vulnerability (CVSS 6.5) in Microsoft Sharepoint Server, published July 20, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 99.9%, the 99th percentile. No source names a fixed version.