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Dossier · Vulnerability

Vulnerability · NVD published 2026-08-11

CVE-2026-63520

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

Signals

Exploited in the wild
Not on KEVNot in CISA's catalogue as of the last daily pull. Absence is not proof of safety.
EPSS · 30-day forecast
1%Chance of exploitation in the next 30 days, 61th percentile of all CVEs. A forecast; KEV outranks it.
CVSS · NVD · HIGH
8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Internet exposure
not stated by sourcesNo exposure census on this CVE's dispatches.

Exploits

not checked

Not checked yet. Our exploit watch has not looked at this CVE, so this says nothing either way.

On the wire

2 dispatches
  1. The August 2026 Security Update ReviewKEV
  2. Rapid7 Analysis: Microsoft SharePoint Remote Code Execution (CVE-2026-63520)KEV

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