CVE-2025-49706
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-2025-49706- 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:F/RL:O/RC:C - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2025-20552
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- Record
EUVD-2025-20552- 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:F/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-j67g-r75f-8hgp
Improper authentication in Microsoft Office SharePoint allows an authorized attacker to perform...
Improper authentication in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
- Record
GHSA-j67g-r75f-8hgp- 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-287
- Updated
- 2026-11-02
CISA KEV No score
Microsoft SharePoint Improper Authentication Vulnerability
Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network. Successfully exploitation could allow an attacker to view sensitive information and make some changes to disclosed information. This vulnerability could be chained with CVE-2025-49704. CVE-2025-53771 is a patch bypass for CVE-2025-49706, and the updates for CVE-2025-53771 include more robust protection than those for CVE-2025-49706.
- Record
CVE-2025-49706- Weakness
- 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-2025-49706- 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 |
| PoC in GitHub | AdityaBhatt3010/CVE-2025-49706-SharePoint-Spoofing-Vulnerability-Under-Active-Exploitation | 2025-07-20 |
| Nuclei | Microsoft SharePoint Server - Authentication Bypass |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-49706 is a medium vulnerability (CVSS 6.5) in Microsoft Sharepoint, published July 8, 2025. CISA lists it as known to be exploited, since July 22, 2025. EUVD reports exploitation since July 22, 2025. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 99.1%, the 99th percentile. No source names a fixed version.
References
msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706
microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49706
nvd.nist.gov/vuln/detail/CVE-2025-49706
github.com/advisories/GHSA-j67g-r75f-8hgp