CVE-2025-53771
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CVSS Score
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Description
No description available
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Related News
About 10 days ago exploits for Microsoft SharePoint (CVE-2025-53770, CVE-2025-53771) started being publicly abused â we wrote about that at here and here .
A few days after the exploit originally became widely known, there are now many different SharePoint exploit attempts in circulation. We do see some scans by researchers to identify vulnerable systems (or to scan for common artifacts of compromise), and a few…
Microsoft disclosed two critical vulnerabilities, CVE-2025-53771 and CVE-2025-53770, that are exploited to attack SharePoint servers. Possession of these cryptographic machine keys allows an attacker to forge authentication tokens and maintain access even if …
CVE-2025-53770 and CVE-2025-53771 are vulnerabilities in on-premise Microsoft SharePoint Servers that evolved from previously patched flaws, allowing unauthenticated remote code execution through advanced deserialization and ViewState abuse.
Cisco Talos is aware of the ongoing exploitation of CVE-2025-53770 and CVE-2025-53771 in the wild. These are path traversal vulnerabilities affecting SharePoint Server Subscription Edition, SharePoint Server 2016, and SharePoint Server 2019.
Affected Products
Affected Versions:
Affected Versions:
Affected Versions:
EU Vulnerability Database
Monitored by ENISA for EU cybersecurity
ENISA Analysis
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Affected Products (ENISA)
ENISA Scoring
CVSS Score (3.1)
EPSS Score
ENISA References
Data provided by ENISA EU Vulnerability Database. Last updated: August 23, 2025
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
Advisory Details
CVSS Scoring
CVSS Score
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
References
Advisory provided by GitHub Security Advisory Database. Published: July 21, 2025, Modified: July 21, 2025
Social Media Intelligence
Real-time discussions and threat intelligence from social platforms
CISA Releases Malware Analysis Report Associated with Microsoft SharePoint Vulnerabilities CISA published a Malware Analysis Report (MAR) with analysis and associated detection signatures on files related to Microsoft SharePoint vulnerabilities: CVE-2025-49704 [CWE-94: Code Injection], CVE-2025-49706 [CWE-287: Improper... **CVEs:** CVE-2025-49704,CVE-2025-49706,CVE-2025-53770,CVE-2025-53771 **Source:** https://www.cisa.gov/news-events/alerts/2025/08/06/cisa-releases-malware-analysis-report-associated-microsoft-sharepoint-vulnerabilities
MAR-251132.c1.v1 Exploitation of SharePoint Vulnerabilities Notification This report is provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained herein. The DHS does not endorse any... **CVEs:** CVE-2025-49704,CVE-2025-49706,CVE-2025-53770,CVE-2025-53771 **Source:** https://www.cisa.gov/news-events/analysis-reports/ar25-218a
Stealing Machine Keys for fun and profit (or riding the SharePoint wave), (Tue, Aug 5th) About 10 days ago exploits for Microsoft SharePoint (CVE-2025-53770, CVE-2025-53771) started being publicly abused – we wrote about that at here and here .
 **CVEs:** CVE-2025-53770,CVE-2025-53771 **Source:** https://isc.sans.edu/diary/rss/32174
Before ToolShell: Exploring Storm-2603’s Previous Ransomware Operations Key Findings Introduction Check Point Research (CPR) has been closely monitoring the ongoing exploitation of a group of Microsoft SharePoint Server vulnerabilities collectively referred to as “ToolShell.” These active attacks leverage four vulnerabilities—CVE-2025-49704, CVE-2025-49706, CVE-2025-53770, and CVE-2025-53771—and are attributed to multiple China affiliated …
Confirmed: SharePoint Server zero-days now being used to drop ransomware in the wild Microsoft confirmed last week that multiple CVEs in on-prem SharePoint Server (2016, 2019, Subscription Edition) are now being exploited to deliver ransomware. Attackers are using the exploit chain to gain access, escalate privileges, and drop payloads. According …
🔥 Top 10 Trending CVEs (29/07/2025) Here’s a quick breakdown of the 10 most interesting vulnerabilities trending today: **1. [CVE-2025-31199](https://nvd.nist.gov/vuln/detail/CVE-2025-31199)** - 📝 A logging issue was addressed with improved data redaction. This issue is fixed in iOS 18.4 and iPadOS 18.4, visionOS 2.4, macOS Sequoia 15.4. An app may be …
ToolShell Malware Family Report # Executive Summary ToolShell is a critical malware family that exploits a chain of vulnerabilities in Microsoft SharePoint Server to achieve unauthenticated remote code execution. First observed in July 2025, this malware has been actively exploited by multiple threat actors, including state-sponsored groups, to compromise on-premises …
ToolShell Attacks SharePoint security vulnerability: Why Secure Infrastructure Matters More Than Ever **Key Questions This Article Answers:** * **Why do SharePoint security vulnerabilities matter?** * **What is the SharePoint ToolShell attack and how did Chinese hackers exploit it?** * **Which organizations were affected by the SharePoint zero-day vulnerabilities?** * **How …
New SharePoint Vulnerabilities (CVE-2025-53770 & CVE-2025-53771) Under Active Exploitation – Patch Now! Trend Micro just published a deep dive into two newly disclosed SharePoint vulnerabilities – [CVE-2025-53770](https://www.trendmicro.com/en_us/research/25/g/cve-2025-53770-and-cve-2025-53771-sharepoint-attacks.html) and [CVE-2025-53771](https://www.trendmicro.com/en_us/research/25/g/cve-2025-53770-and-cve-2025-53771-sharepoint-attacks.html) – and they’re already being exploited in the wild. These bugs allow unauthenticated attackers to execute arbitrary commands via specially crafted …
🔥 Top 10 Trending CVEs (28/07/2025) Here’s a quick breakdown of the 10 most interesting vulnerabilities trending today: **1. [CVE-2025-22230](https://nvd.nist.gov/vuln/detail/CVE-2025-22230)** - 📝 VMware Tools for Windows contains an authentication bypass vulnerability due to improper access control.A malicious actor with non-administrative privileges on a guest VM may gain ability to perform …