#VU112655 Improper Authentication in Microsoft products - CVE-2025-49706

Vulnerability identifier: #VU112655

Vulnerability risk: Medium

CVSSv4.0: 4.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-49706

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft SharePoint Server
Server applications / Application servers
Microsoft SharePoint Enterprise Server
Server applications / Application servers
Microsoft SharePoint Server Subscription Edition
Server applications / Application servers

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests in Microsoft SharePoint Server. A remote attacker can perform spoofing attack and gain unauthorized access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft SharePoint Server: before 16.0.10417.20027

Microsoft SharePoint Enterprise Server: before 16.0.5508.1000

Microsoft SharePoint Server Subscription Edition: before 16.0.18526.20424

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External links
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.