Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
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Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-07-22), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 6.5 retained for reference. Confidence: HIGH.
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
July 8, 2025
October 27, 2025
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.
Working exploit code is in the public domain (1 Metasploit module) (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
A deep dive into CVE-2025-49706 — the SharePoint spoofing flaw now exploited in the wild for stealthy web shell deployment and privilege escalation.
Open source ↗Microsoft SharePoint Server ToolPane Unauthenticated Remote Code Execution (aka ToolShell)
Open source ↗Microsoft SharePoint Server - Authentication Bypass
Open source ↗See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-49706
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msrc
CWE-287