7.8

CVE-2023-23399: microsoft 365_apps Out-of-bounds Read

CVSS: 7.8v3.1HighModified
Published 14-03-2023Last modified 01-01-2025
Open JSON

Vulnerability summary

CVE-2023-23399 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in microsoft 365_apps. EPSS estimates a 2.53% chance of exploitation in the next 30 days, higher than 84.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
42/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
2.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Timeline

  1. 14-03-2023
    PublishedVulnerability first disclosed.
  2. 01-01-2025
    Last modifiedVulnerability information updated.

Description

Microsoft Excel Remote Code Execution Vulnerability

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.53%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

0.00 pp

From 2.53% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • exploit-databaseremotemultipleUnverified

    Microsoft Excel 365 MSO (Version 2302 Build 16.0.16130.20186) 64-bit - Remote Code Execution (RCE)

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Microsoft17 products

1 vendor · 17 products

References

1 links