7.5

CVE-2026-70105: microsoft microsoft_365 Improper Input Validation

CVSS: 7.5v3.1HighAnalyzed
Published 20-08-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-70105 is a high (CVSS 7.5) Improper Input Validation vulnerability in microsoft microsoft_365. EPSS estimates a 0.97% chance of exploitation in the next 30 days, higher than 61.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.97%
0%100%
Low · +0.44 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-08-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.97%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

+0.44 pp

From 0.53% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.97%

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

Microsoft13 products

1 vendor · 13 products

References

1 links