(0Day) Microsoft SharePoint GetTransformer Unsafe Reflection Denial-of-Service Vulnerability

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Microsoft SharePoint. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of the GetTransformer method. The issue results from t...

The Bug Report - July 2025 Edition

The Bug Report – July 2025 Edition By Jonathan Omakun and Tola Olawale · August 6, 2025 Why am I here? July usually means barbecues, fireworks and pool parties—but this year, it brought something far more explosive: unauthenticated remote code execution, deserialization chaos, and an old-school...

Exploit for Deserialization of Untrusted Data in Microsoft

CVE-2025-53770-SharePoint-Deserialization-RCE-PoC A critical v...

Microsoft SharePoint Server Authentication Bypass (CVE-2025-53771)

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Exploit for Deserialization of Untrusted Data in Microsoft

🛡️ CVE-2025-53770 SharePoint Vulnerability Scanner A Python-b...

⚡ Weekly Recap — SharePoint Breach, Spyware, IoT Hijacks, DPRK Fraud, Crypto Drains and More

Some risks don't breach the perimeter—they arrive through signed software, clean resumes, or sanctioned vendors still hiding in plain sight. This week, the clearest threats weren't the loudest—they were the most legitimate-looking. In an environment where identity, trust, and tooling are all...

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 possible 10. It gives unauthenticated remote access to SharePoint Servers exposed to the Internet...

Exploit for Deserialization of Untrusted Data in Microsoft

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Exploit for Deserialization of Untrusted Data in Microsoft

CVE-2025-53770 - Zero-day exploitation in the wild of Microsof...

ToolShell: Remote Code Execution in Microsoft SharePoint (CVE-2025-53770)

On July 19, 2025, a critical remote code execution RCE vulnerability CVE-2025-53770, also referred to as ToolShell was publicly disclosed, impacting on-premises Microsoft SharePoint Server installations. This vulnerability allows unauthenticated attackers to execute arbitrary code remotely by...

ToolShell: a story of five vulnerabilities in Microsoft SharePoint

On July 19–20, 2025, various security companies and national CERTs published alerts about active exploitation of on-premise SharePoint servers. According to the reports, observed attacks did not require authentication, allowed attackers to gain full control over the infected servers, and were...

(Pwn2Own) Microsoft SharePoint ToolPane Authentication Bypass Vulnerability

This vulnerability allows remote attackers to bypass authentication on affected installations of Microsoft SharePoint. Authentication is not required to exploit this vulnerability. The specific flaw exists within the ToolPane endpoint. The application does not adequately restrict access to a...

(Pwn2Own) Microsoft SharePoint Deserialization of Untrusted Data Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft SharePoint Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the...

Exploit for Deserialization of Untrusted Data in Microsoft

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Microsoft SharePoint Remote Code Execution

Microsoft SharePoint Server Subscription Edition 16.0.18526.20508 or 2016 16.0.5513.1001 or 2019 16.0.10417.20037 is affected by a vulnerability that allows an unauthenticated attacker to execute arbitrary code through insecure deserialization. No source data...

Imperva Customers Protected Against Critical “ToolShell” Zero‑Day in Microsoft SharePoint

A critical zero-day vulnerability in Microsoft SharePoint, tracked as CVE-2025-53770, is under active exploitation in the wild. The vulnerability, with a CVSS score of 9.8, impacts on-premises SharePoint Server 2016, 2019, and Subscription Edition, and allows unauthenticated remote code execution...

Exploit for Deserialization of Untrusted Data in Microsoft

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Exploit for Deserialization of Untrusted Data in Microsoft

Pre-Exploit Vulnerability Check for CVE-2025-53770 with Burp...

Hackers Exploit Microsoft SharePoint Flaws in Global Breaches

Hackers are exploiting critical SharePoint flaws CVE-2025-53770/53771 to breach global targets, including governments and corporations. Microsoft urges immediate action. Learn about the active attacks and how to protect your network from credential theft and backdoors...

CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2025-49704link is external Microsoft SharePoint Code Injection Vulnerability CVE-2025-49706link is external Microsoft SharePoint Improper Authentication...