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Vulnerability record · CVE-2026-70105 · published 20 August 2026

CVE-2026-70105: Microsoft 365 improper input validation vulnerability

Microsoft · Microsoft 365

Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

7.5 CVSS 3.1 High EPSS 0.97% · top 39.7% CWE-20 · Improper input validation
7.5CVSS 3.1 base score
0.97%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
1References
4 Sep 2026Last modified by NVD

Description

Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70105 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-70105), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.