CVE-2023-29335: microsoft 365_apps Improper Input Validation
CVSS: 7.5v3.1HighModified
Published 09-05-2023Last modified 10-07-2025
Vulnerability summary
CVE-2023-29335 is a high (CVSS 7.5) Improper Input Validation vulnerability in microsoft 365_apps. EPSS estimates a 1.16% chance of exploitation in the next 30 days, higher than 66.9% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
1.16%
0%100%
Low · -0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 09-05-2023PublishedVulnerability first disclosed.
- 10-07-2025Last modifiedVulnerability information updated.
Description
Microsoft Word Security Feature Bypass Vulnerability
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.16%
Chance of exploitation in the next 30 days
Percentile
67%
Versus all other CVEs
30-day change
-0.01 pp
From 1.17% on 21-09-2026
21-09-202621-10-2026
EPSS score1.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft21 products
- 365_appsna
- microsoft 365 apps for enterprise≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases
- microsoft office 2019≥ 19.0.0, < https://aka.ms/OfficeSecurityReleases
- microsoft office ltsc 2021≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases
- microsoft word 2013 service pack 1≥ 15.0.1, < 15.0.5553.1000
1 vendor · 21 products