7.5

CVE-2025-21218: microsoft windows_server_2012 Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighAnalyzed
Published 14-01-2025Last modified 09-06-2026
Open JSON

Vulnerability summary

CVE-2025-21218 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in microsoft windows_server_2012. EPSS estimates a 2.63% chance of exploitation in the next 30 days, higher than 85.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
2.63%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-01-2025
    PublishedVulnerability first disclosed.
  2. 09-06-2026
    Last modifiedVulnerability information updated.

Description

Windows Kerberos Denial of Service Vulnerability

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

2.63%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

+0.04 pp

From 2.59% on 22-09-2026

22-09-202622-10-2026
EPSS score
2.63%

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