4.9

CVE-2026-70217: microsoft microsoft sharepoint server subscription edition Improper Access Control

CVSS: 4.9v3.1MediumAnalyzed
Published 13-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-70217 is a medium (CVSS 4.9) Improper Access Control vulnerability in microsoft microsoft sharepoint server subscription edition. EPSS estimates a 0.86% chance of exploitation in the next 30 days, higher than 57.7% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
4.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.86%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

Improper access control in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.86%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202620-10-2026
EPSS score
0.86%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Microsoft2 products

1 vendor · 2 products

References

1 links