Known Exploited Vulnerability
6.5
MEDIUM CVSS 3.1
CVE-2025-49706
Microsoft SharePoint Improper Authentication Vulnerability - [Actively Exploited]
Description

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

INFO

Published Date :

July 8, 2025, 5:15 p.m.

Last Modified :

July 30, 2025, 1 a.m.

Remotely Exploit :

Yes !
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

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. The update for CVE-2025-53771 includes more robust protections than the update for CVE-2025-49706.

Required Action :

CISA recommends disconnecting public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS). For example, SharePoint Server 2013 and earlier versions are end-of-life and should be discontinued if still in use. For supported versions, please follow the mitigations according to CISA and vendor instructions. Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.

Notes :

CISA Mitigation Instructions: https://www.cisa.gov/news-events/alerts/2025/07/20/microsoft-releases-guidance-exploitation-sharepoint-vulnerability-cve-2025-53770; https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ ; https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 ; https://nvd.nist.gov/vuln/detail/CVE-2025-49706

Affected Products

The following products are affected by CVE-2025-49706 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft sharepoint_enterprise_server
2 Microsoft sharepoint_server
3 Microsoft sharepoint_server_2016
4 Microsoft sharepoint_server_2019
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
To address an improper authentication vulnerability in Microsoft SharePoint, apply the latest security updates.
  • Apply the relevant security updates provided by Microsoft to address the vulnerability.
  • Ensure all SharePoint servers are updated to the latest versions.
Public PoC/Exploit Available at Github

CVE-2025-49706 has a 15 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-49706.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 Vendor Advisory
https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ Press/Media Coverage Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-49706 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : Aug. 15, 2025, 9:07 a.m. This repo has been linked 310 different CVEs too.

CVE-2025-53770 - SharePoint

Updated: 1 week, 3 days ago
0 stars 0 fork 0 watcher
Born at : Aug. 14, 2025, 8:57 a.m. This repo has been linked 4 different CVEs too.

None

Updated: 1 week, 4 days ago
0 stars 0 fork 0 watcher
Born at : Aug. 13, 2025, 12:52 p.m. This repo has been linked 3 different CVEs too.

SharePoint 2025 RCE Exploitation GUI

Python Ruby

Updated: 2 weeks, 1 day ago
1 stars 1 fork 1 watcher
Born at : Aug. 8, 2025, 5:40 p.m. This repo has been linked 4 different CVEs too.

None

Dockerfile Shell Python

Updated: 1 month ago
0 stars 0 fork 0 watcher
Born at : July 23, 2025, 3:58 p.m. This repo has been linked 1 different CVEs too.

None

PowerShell

Updated: 1 month ago
0 stars 0 fork 0 watcher
Born at : July 22, 2025, 9:54 p.m. This repo has been linked 4 different CVEs too.

Honeypot for CVE-2025-53770 aka ToolShell

Python Shell YARA

Updated: 4 weeks, 2 days ago
0 stars 1 fork 1 watcher
Born at : July 22, 2025, 1:44 p.m. This repo has been linked 4 different CVEs too.

A critical zero-auth RCE vulnerability in SharePoint (CVE-2025-53770), now exploited in the wild, building directly on the spoofing flaw CVE-2025-49706.

cve cve-2025-49706 cve-2025-53770 cybersecurity microsoft-sharepoint sharepoint sharepoint-2016 toolshell

Updated: 1 month ago
2 stars 0 fork 0 watcher
Born at : July 22, 2025, 9:32 a.m. This repo has been linked 2 different CVEs too.

None

PowerShell

Updated: 1 month ago
0 stars 0 fork 0 watcher
Born at : July 21, 2025, 7:32 p.m. This repo has been linked 3 different CVEs too.

Comprueba si un servidor SharePoint on-premises es vulnerable a CVE-2025-53770

Python

Updated: 1 month ago
0 stars 0 fork 0 watcher
Born at : July 21, 2025, 6:43 p.m. This repo has been linked 3 different CVEs too.

Scanner for the SharePoint CVE-2025-53770 RCE zero day vulnerability.

cve poc sharepoint cve-2025-53770

Go Dockerfile Makefile

Updated: 1 week ago
41 stars 12 fork 12 watcher
Born at : July 21, 2025, 2:19 p.m. This repo has been linked 2 different CVEs too.

A deep dive into CVE-2025-49706 — the SharePoint spoofing flaw now exploited in the wild for stealthy web shell deployment and privilege escalation.

cve cybersecurity microsoft-sharepoint sharepoint sharepoint-2016 cve-2025-49706 toolshell

Updated: 1 month ago
8 stars 2 fork 2 watcher
Born at : July 20, 2025, 1:55 p.m. This repo has been linked 2 different CVEs too.

CISA Bot is a GitHub bot that automatically monitors the Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) Catalog. When new vulnerabilities are published in the KEV, the bot creates GitHub issues in this repository with detailed information about each vulnerability.

Python

Updated: 3 days ago
2 stars 1 fork 1 watcher
Born at : Oct. 29, 2024, 10:19 a.m. This repo has been linked 201 different CVEs too.

SecDB - Security Feeds

cve security-feeds vulnerability

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : July 1, 2022, 8:37 p.m. This repo has been linked 102 different CVEs too.

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 13 hours ago
7210 stars 1199 fork 1199 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 806 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-49706 vulnerability anywhere in the article.

  • security.nl
Microsoft geeft Chinese securitybedrijven minder informatie over kwetsbaarheden

Microsoft geeft Chinese securitybedrijven minder informatie over kwetsbaarheden waarvoor het een aantal dagen later beveiligingsupdates uitbrengt, zo laat het techbedrijf tegenover Bloomberg en Reuter ... Read more

Published Date: Aug 21, 2025 (3 days, 10 hours ago)
  • CybersecurityNews
Qilin Ransomware Leads The Attack Landscape With 70+ Claimed Victims in July

The ransomware threat landscape witnessed a concerning surge in July 2025, with the Qilin ransomware group maintaining its dominant position for the third time in four months. The group successfully c ... Read more

Published Date: Aug 14, 2025 (1 week, 2 days ago)
  • Help Net Security
August 2025 Patch Tuesday forecast: Try, try, again

July turned into a surprisingly busy month. It started slowly with a fairly ‘calm’ Patch Tuesday as I forecasted in my last blog. Although there were 130 new CVEs addressed across all the Microsoft re ... Read more

Published Date: Aug 08, 2025 (2 weeks, 2 days ago)
  • The Register
CISA releases malware analysis for Sharepoint Server attack

CISA has published a malware analysis report with compromise indicators and Sigma rules for "ToolShell" attacks targeting specific Microsoft SharePoint Server versions. "Cyber threat actors have chain ... Read more

Published Date: Aug 07, 2025 (2 weeks, 3 days ago)
  • CybersecurityNews
CISA Warns of ‘ToolShell’ Exploits Chain Attacks SharePoint Servers – Discloses IOCs and detection signatures

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) released an urgent analysis in early July 2025, detailing a sophisticated exploit chain targeting on-premises Microsoft SharePoint serv ... Read more

Published Date: Aug 07, 2025 (2 weeks, 3 days ago)
  • security.nl
VS deelt informatie over malware aangetroffen bij SharePoint-aanvallen

Het Amerikaanse cyberagentschap CISA heeft informatie gedeeld over malware die bij recente aanvallen tegen Microsoft SharePoint-servers is aangetroffen. Met de informatie kunnen organisaties kijken of ... Read more

Published Date: Aug 07, 2025 (2 weeks, 3 days ago)
  • Daily CyberSecurity
CISA Warns of “ToolShell”: Critical Exploit Chain Hits SharePoint Servers, Bypasses Authentication

The Cybersecurity and Infrastructure Security Agency (CISA) has released an in-depth Malware Analysis Report warning of a sophisticated exploitation campaign targeting on-premises Microsoft SharePoint ... Read more

Published Date: Aug 07, 2025 (2 weeks, 3 days ago)
  • CybersecurityNews
Chinese Hackers Exploit SharePoint Vulnerabilities to Deploy Toolsets Includes Backdoor, Ransomware and Loaders

A sophisticated Chinese threat actor has been exploiting critical vulnerabilities in Microsoft SharePoint to deploy an advanced malware toolset dubbed “Project AK47,” according to new research publish ... Read more

Published Date: Aug 06, 2025 (2 weeks, 4 days ago)
  • BleepingComputer
The Heat Wasn't Just Outside: Cyber Attacks Spiked in Summer 2025

Summer 2025 wasn't just hot; it was relentless. Ransomware hammered hospitals, retail giants suffered data breaches, insurance firms were hit by phishing, and nation-state actors launched disruptive c ... Read more

Published Date: Aug 05, 2025 (2 weeks, 5 days ago)
  • BleepingComputer
Ransomware gangs join attacks targeting Microsoft SharePoint servers

Ransomware gangs have recently joined ongoing attacks targeting a Microsoft SharePoint vulnerability chain, part of a broader exploitation campaign that has already led to the breach of at least 148 o ... Read more

Published Date: Aug 04, 2025 (2 weeks, 6 days ago)
  • Daily CyberSecurity
Storm-2603: Chinese APT Deploys Warlock & LockBit with AK47C2 Framework

Antivirus Terminator supported arguments when run without parameters | Image: Check Point Check Point Research (CPR) has detailed a previously undocumented Chinese-affiliated threat actor—Storm-2603—l ... Read more

Published Date: Aug 04, 2025 (2 weeks, 6 days ago)
  • CybersecurityNews
Storm-2603 Using Custom Malware That Leverages BYOVD to Tamper with Endpoint Protections

A newly identified threat actor designated Storm-2603 has emerged as a sophisticated adversary in the ransomware landscape, leveraging advanced custom malware to circumvent endpoint security protectio ... Read more

Published Date: Aug 02, 2025 (3 weeks, 1 day ago)
  • The Hacker News
Storm-2603 Deploys DNS-Controlled Backdoor in Warlock and LockBit Ransomware Attacks

Aug 01, 2025Ravie LakshmananThreat Intelligence / Ransomware The threat actor linked to the exploitation of the recently disclosed security flaws in Microsoft SharePoint Server is using a bespoke co ... Read more

Published Date: Aug 01, 2025 (3 weeks, 2 days ago)
  • AttackIQ
Response to CISA Alert: Microsoft Releases Guidance on Exploitation of SharePoint Vulnerabilities

On July 8, 2025, vulnerabilities CVE-2025-49704 (Remote Code Execution) and CVE-2025-49706 (Network Spoofing), affecting on-premises Microsoft SharePoint servers, were officially reported. On the same ... Read more

Published Date: Jul 30, 2025 (3 weeks, 3 days ago)
  • Schneier on Security
Microsoft SharePoint Zero-Day

Chinese hackers are exploiting a high-severity vulnerability in Microsoft SharePoint to steal data worldwide: The vulnerability, tracked as CVE-2025-53770, carries a severity rating of 9.8 out of a po ... Read more

Published Date: Jul 28, 2025 (3 weeks, 6 days ago)
  • CybersecurityNews
New “ToolShell” Exploit Chain Attacking SharePoint Servers to Gain Complete Control

A critical new threat targeting Microsoft SharePoint servers through a sophisticated exploit chain dubbed “ToolShell.” This multi-stage attack combines previously patched vulnerabilities with fresh ze ... Read more

Published Date: Jul 28, 2025 (3 weeks, 6 days ago)
  • The Register
Blame a leak for Microsoft SharePoint attacks, researcher insists

A week after Microsoft told the world that its July software updates didn't fully fix a couple of bugs, which allowed miscreants to take over on-premises SharePoint servers and remotely execute code, ... Read more

Published Date: Jul 26, 2025 (4 weeks, 1 day ago)
  • SentinelOne
The Good, the Bad and the Ugly in Cybersecurity – Week 30

The Good | Authorities Dismantle XSS.is Cybercrime Forum & Release Free Phobos/8Base Decryptor After a 12-year long run, XSS[.]is (formerly DaMaGeLaB) faced major disruptions this week with the arrest ... Read more

Published Date: Jul 25, 2025 (4 weeks, 2 days ago)
  • SentinelOne
The Good, the Bad and the Ugly in Cybersecurity – Week 30

The Good | Authorities Dismantle XSS.is Cybercrime Forum & Release Free Phobos/8Base Decryptor After a 12-year long run, XSS[.]is (formerly DaMaGeLaB) faced major disruptions this week with the arrest ... Read more

Published Date: Jul 25, 2025 (4 weeks, 2 days ago)
  • CybersecurityNews
Hackers Exploiting Sharepoint 0-day Vulnerability to Deploy Warlock Ransomware

Microsoft has issued urgent warnings about active exploitation of critical SharePoint vulnerabilities CVE-2025-53770 and CVE-2025-53771 by multiple threat actors, including the China-based group Storm ... Read more

Published Date: Jul 25, 2025 (4 weeks, 2 days ago)

The following table lists the changes that have been made to the CVE-2025-49706 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Jul. 30, 2025

    Action Type Old Value New Value
    Changed Required Action CISA recommends disconnecting public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS). For example, SharePoint Server 2013 and earlier versions are end-of-life and should be discontinued if still in use. For supported versions, please follow the mitigations according to CISA and vendor instructions. Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available. 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.
  • Modified Analysis by [email protected]

    Jul. 23, 2025

    Action Type Old Value New Value
    Added Reference Type CISA-ADP: https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/ Types: Press/Media Coverage, Vendor Advisory
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Jul. 23, 2025

    Action Type Old Value New Value
    Added Date Added 2025-07-22
    Added Due Date 2025-07-23
    Added Required Action CISA recommends disconnecting public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS). For example, SharePoint Server 2013 and earlier versions are end-of-life and should be discontinued if still in use. For supported versions, please follow the mitigations according to CISA and vendor instructions. Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
    Added Vulnerability Name Microsoft SharePoint Improper Authentication Vulnerability
  • CVE Modified by [email protected]

    Jul. 22, 2025

    Action Type Old Value New Value
    Changed Description Improper authentication in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network. Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Removed CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jul. 22, 2025

    Action Type Old Value New Value
    Added Reference https://www.microsoft.com/en-us/security/blog/2025/07/22/disrupting-active-exploitation-of-on-premises-sharepoint-vulnerabilities/
  • CVE Modified by [email protected]

    Jul. 21, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
    Removed CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
  • Initial Analysis by [email protected]

    Jul. 16, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:* *cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:* *cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* versions up to (excluding) 16.0.18526.20424
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Jul. 08, 2025

    Action Type Old Value New Value
    Added Description Improper authentication in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
    Added CWE CWE-287
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49706
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact