CVE-2026-50522
Microsoft SharePoint Remote Code Execution Vulnerability
- Published
- Jul 14, 2026
- Updated
- Sep 17, 2026
- Assigning CNA
- microsoft
- Evidence observed
- Jul 22, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.7%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Sources
5- CVE-2026-50522Exploit
CVE-2026-50522 PoC
- CVE-2026-50522Research
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
- CVE-2026-50522Exploit
Microsoft SharePoint CVE-2026-50522
Responsible use
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