CVE-2026-56164 KEV
5.3
MEDIUM · CVSS 3.1 · EPSS 1% (pctl 62)
Patch first
On CISA KEV — known exploited in the wild, due 2026-07-17.
Description
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
Scoring
| CVSS | 5.3 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| EPSS | 1.01% — more likely to be exploited than 62% of all CVEs |
| Weakness | CWE-306 |
| On CISA KEV | yes — remediate by 2026-07-17 |
| Public exploit | none known |
| Published | 2026-07-14 |
| Last modified | 2026-07-14 |
CISA KEV
| Name | Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability |
|---|---|
| Added | 2026-07-14 |
| Due | 2026-07-17 |
| Vendor / product | Microsoft / SharePoint Server |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| microsoft | sharepoint server |
References
→ the Explorer · watch your stack · NVD