CVE-2026-56164
CVSS v3
5.3
MEDIUM
EPSS Score
7.0 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
CISA Known Exploited Vulnerability
- Date Added
- 2026-07-14
- Patch Due Date
- 2026-07-17
- Ransomware Use
- Unknown
Technical details
- CVSS v3 Vector
- 3.1
- Published
- 2026-07-14
- Last Modified
- 2026-07-14
Frequently asked questions
What is CVE-2026-56164?
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
Is CVE-2026-56164 actively exploited?
Yes. CVE-2026-56164 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 7/17/2026.
What is the CVSS score for CVE-2026-56164?
CVE-2026-56164 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string 3.1.
Is CVE-2026-56164 affecting your environment?
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