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CVE-2024-38018 is a critical remote code execution vulnerability in Microsoft SharePoint Server caused by deserialization of untrusted data. Available reporting attributes the issue to SharePoint deserialization logic, including the SPSerializationBinder.IsAllowedType() path, where insufficient restriction of deserializable types can allow attacker-controlled data to be deserialized in an unsafe manner. Microsoft assessed the issue as more likely to be exploited and assigned it a CVSS v3 score of 8.8. The vulnerability affects on-premises SharePoint Server deployments and can be abused by an authenticated attacker with at least Site Member privileges. Successful exploitation does not require user interaction and can result in execution of arbitrary code on the SharePoint server.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Microsoft SharePoint Server remote code execution vulnerability that Microsoft assesses as more likely to be exploited within 30 days.
A SharePoint deserialization-related vulnerability discussed as chainable with ToolShell/auth bypass, especially on SharePoint 2013. The content describes the root cause in SPSerializationBinder.IsAllowedType() and manual patching approaches.
Microsoft SharePoint remote code execution vulnerability caused by deserialization of untrusted data; exploitation requires Site Member or higher privileges.
SharePoint Server remote code execution vulnerability requiring authenticated SharePoint permissions (Site Member/Site Owner).
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.