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Vulnerability IntelligenceCVE-2026-50522

CVE-2026-50522

CRITICAL9.8

Microsoft SharePoint Remote Code Execution Vulnerability

Published Jul 14, 2026

Modified 2 weeks ago

Details

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50522

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-50522

https://www.cve.org/CVERecord?id=CVE-2026-50522

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

9.8/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

Serialization

Deserialization of Untrusted Data

Ecosystems

Timeline

PublishedJul 14, 2026

ModifiedOct 8, 2026

CVE-2026-50522 | Mondoo Vulnerability Intelligence