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CVE-2025-49704 is a remote code execution vulnerability in on-premises Microsoft Office SharePoint caused by improper control of code generation. Microsoft classifies the issue as code injection. Public technical analysis of the related ToolShell exploitation chain indicates the flaw is reachable through the SharePoint ToolPane processing path and can be abused via crafted Web Part data. More detailed reverse engineering tied the vulnerable behavior to unsafe handling of attacker-controlled XML content and deserialization logic involving the ExcelDataSet control in Microsoft.PerformancePoint.Scorecards.Client.dll, where crafted data supplied through Web Part parameters could lead to arbitrary method execution. The vulnerability was originally patched in July 2025, but subsequent reporting showed the initial fix was incomplete in some deployments and was later superseded by the more comprehensive CVE-2025-53770 update. The flaw affects on-premises SharePoint Server deployments and was widely discussed as part of the ToolShell exploit chain together with CVE-2025-49706.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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160 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A SharePoint vulnerability referenced only as related content and not discussed in the main article.
A SharePoint Server vulnerability previously used in ToolShell attack chains to compromise servers.
SharePoint code injection vulnerability enabling authenticated remote code execution, commonly described here as part of a phishing-to-ransomware exploitation chain.
One component CVE in the ToolShell SharePoint exploit chain that enabled unauthenticated remote code execution against self-hosted SharePoint servers.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.