5.5

CVE-2023-21540: microsoft windows_10_1809 Improper Input Validation

CVSS: 5.5v3.1MediumModified
Published 10-01-2023Last modified 01-01-2025
Open JSON

Vulnerability summary

CVE-2023-21540 is a medium (CVSS 5.5) Improper Input Validation vulnerability in microsoft windows_10_1809. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.60%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-01-2023
    PublishedVulnerability first disclosed.
  2. 01-01-2025
    Last modifiedVulnerability information updated.

Description

Windows Cryptographic Information Disclosure Vulnerability

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

+0.02 pp

From 0.58% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.60%

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

Microsoft15 products

1 vendor · 15 products

References

1 links