8.6

CVE-2025-47994: microsoft 365_apps Deserialization of Untrusted Data

CVSS: 8.6v3.1HighAnalyzed
Published 08-07-2025Last modified 13-02-2026
Open JSON

Vulnerability summary

CVE-2025-47994 is a high (CVSS 8.6) Deserialization of Untrusted Data vulnerability in microsoft 365_apps. EPSS estimates a 3.28% chance of exploitation in the next 30 days, higher than 88.2% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (NVD)
EPSS score
3.28%
0%100%
Low · +0.48 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-07-2025
    PublishedVulnerability first disclosed.
  2. 13-02-2026
    Last modifiedVulnerability information updated.

Description

Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

3.28%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

+0.48 pp

From 2.79% on 20-09-2026

20-09-202620-10-2026
EPSS score
3.28%

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

Microsoft9 products

1 vendor · 9 products

References

1 links