CVE-2025-21218
published 2025-01-14CVE-2025-21218: Windows Kerberos Denial of Service Vulnerability Windows Kerberos Denial of Service Vulnerability
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.63%
85.4th percentile
Windows Kerberos Denial of Service Vulnerability
Windows Kerberos Denial of Service Vulnerability
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25273 | 6.2.9200.25273 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22371 | 6.3.9600.22371 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.7699 | 10.0.14393.7699 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.6775 | 10.0.17763.6775 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.3091 | 10.0.20348.3091 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.2894 | 10.0.26100.2894 |
| msrc | windows_server_2012 | — | — |
| msrc | windows_server_2012_r2 | — | — |
| msrc | windows_server_2016 | — | — |
| msrc | windows_server_2019 | — | — |
| msrc | windows_server_2022 | — | — |
| msrc | windows_server_2022_23h2_edition | — | — |
| msrc | windows_server_2025 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
cvelistv57.5HIGH
vendor_msrc7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Microsoft
Windows Kerberos Denial of Service Vulnerability
vendor_msrc·2025-01-14·CVSS 7.5
CVE-2025-21218 [HIGH] CWE-400 Windows Kerberos Denial of Service Vulnerability
Windows Kerberos Denial of Service Vulnerability
FAQ: How could an attacker exploit this vulnerability?
An unauthenticated attacker could use a specially crafted application to leverage a protocol vulnerability in the Kerberos Key Distribution Center (KDC) Proxy Service to perform denial of service against the target.
Windows Kerberos: Windows Kerberos
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Denial of Service
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5050008
Reference: https://support.microsoft.com/help/5050008
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5049983
Reference: https://support.microsoft.com/hel
CVEList
Windows Kerberos Denial of Service Vulnerability
cvelistv5·2025-01-14·CVSS 7.5
CVE-2025-21218 [HIGH] CWE-400 Windows Kerberos Denial of Service Vulnerability
Windows Kerberos Denial of Service Vulnerability
Windows Kerberos Denial of Service Vulnerability
No detection rules found.
No public exploits indexed.
Bleepingcomputer
Microsoft January 2025 Patch Tuesday fixes 8 zero-days, 159 flaws
blogs_bleepingcomputer·2025-01-14·CVSS 7.8
[HIGH] Microsoft January 2025 Patch Tuesday fixes 8 zero-days, 159 flaws
## Microsoft January 2025 Patch Tuesday fixes 8 zero-days, 159 flaws
## Lawrence Abrams
40 Elevation of Privilege Vulnerabilities
14 Security Feature Bypass Vulnerabilities
58 Remote Code Execution Vulnerabilities
24 Information Disclosure Vulnerabilities
20 Denial of Service Vulnerabilities
5 Spoofing Vulnerabilities
To learn more about the non-security updates released today, you can review our dedicated articles on the Windows 11 KB5050009 & KB5050021 cumulative updates and the Windows 10 KB5048652 cumulative update.
## Three actively exploited zero-day disclosed
This month's Patch Tuesday fixes three actively exploited and five publicly exposed zero-day vulnerabilities.
Microsoft classifies a zero-day flaw as one that is publicly disclosed or actively exploited while no offi
Bugzilla
CVE-2024-21218 mysql: InnoDB unspecified vulnerability (CPU Oct 2024)
bugzilla·2024-10-15·CVSS 4.9
CVE-2024-21218 [MEDIUM] CVE-2024-21218 mysql: InnoDB unspecified vulnerability (CPU Oct 2024)
CVE-2024-21218 mysql: InnoDB unspecified vulnerability (CPU Oct 2024)
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.39 and prior, 8.4.2 and prior and 9.0.1 and prior. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 9
Via RHSA-2025:1671 https://access.redhat.com/errata/RH
2025-01-14
Published