CVE-2025-49706 | Microsoft SharePoint Server Spoofing Vulnerability

Exp

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Published: 2025-07-08 Last update: 2025-10-27 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-49706 is rated Critical Active Threat (89/100): CVSS Medium severity, with high exploitation likelihood (EPSS 74.99%, 99th percentile). CISA KEV confirms active exploitation (added 2025-07-22) affecting Microsoft / SharePoint. an authentication bypass (CWE-287) Unauthenticated remote administrative access may be possible. EPSS rose +3.42% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2025-49706

Name: Microsoft SharePoint Improper Authentication Vulnerability · CISA KEV detail

Exploit added: 2025-07-22

Action due: 2025-07-23

Required action: Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Exploit prediction scoring system (EPSS) score for CVE-2025-49706

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-04 71.57% 74.99% +3.42%
2 2026-04-25 73.72% 71.57% -2.15%
3 2026-04-24 — 73.72% —

Full EPSS history (79 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-49706

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 2.5 [email protected]

Weakness enumeration for CVE-2025-49706

Affected software / configurations for CVE-2025-49706

Vendor Product Version Raw CPE
microsoft sharepoint_enterprise_server 2016 cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
microsoft sharepoint_server < 16.0.18526.20424 cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:*
microsoft sharepoint_server 2019 cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

References for CVE-2025-49706

cvelogic Threat Intelligence