CVE-2025-53771 json
Microsoft SharePoint Server Spoofing Vulnerability
published last yr. modified 4mo ago also EUVD-2025-22040
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 99.9%
- EPSS 99.9% chance of exploitation in 30 days, percentile 99.9%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Patch / fix
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5513.1001
- Microsoft Microsoft SharePoint Server 2019 16.0.10417.20037
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.18526.20508
Is CVE-2025-53771 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerTimeline
- First public exploit (Metasploit exploit/windows/http/sharepoint_toolpane_rce)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
99.89% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- Metasploit exploit/windows/http/sharepoint_toolpane_rce Microsoft SharePoint Server ToolPane Unauthenticated Remote Code Execution (aka ToolShell) metasploit exploit, excellent rank, 2025-07-08
- Nuclei template Microsoft SharePoint Server - Authentication Bypass (ToolShell) nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | 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 |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Server Subscription Edition
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-53771
vendor-advisory, patch
-
bleepingcomputer.com
/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/
press/media-coverage
Sources
- CVE List CVE-2025-53771
- NVD CVE-2025-53771
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