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HIGH · 8.1

CVE-2026-63520

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

Vulnerability Description

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftSharepoint Server< 16.0.19725.20522

Related Weaknesses (CWE)

CWE-20

References

FAQ

What is CVE-2026-63520?

CVE-2026-63520 is a vulnerability with a CVSS score of 8.1 (HIGH). Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

How severe is CVE-2026-63520?

CVE-2026-63520 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63520?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sharepoint Server.