Windows Key Distribution Center Security Feature Bypass Vulnerability

Source data

Overview

Incorrect authorization in Windows Key Distribution Center allows an authorized attacker to bypass a security feature over a network.

Impact & technical details

Security Feature Bypass

What kind of security feature could be bypassed by successfully exploiting this vulnerability? An attacker could bypass the Kerberos service ticketing feature which performs user access control checks.

According to the CVSS metric, the attack complexity is high (AC:H). What does this mean for this vulnerability? An attacker would need specific conditions to be in place (i.e. particular protocol settings, or configurations, etc.) before an attack could succeed, which reduces the likelihood of widespread or opportunistic exploitation.

According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability? Any authenticated attacker could trigger this vulnerability. It does not require admin or other elevated privileges.

CVSS base score

5.3 / 10

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

• Windows 10 Version 1607 for 32-bit Systems
• Windows 10 Version 1607 for x64-based Systems
• Windows 10 Version 1809 for 32-bit Systems
• Windows 10 Version 1809 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems

Source guidance

Remediation

The source provides update references without a separate remediation summary. Review the applicable update links below.

At least one Microsoft vendor-fix reference is available. Check each affected product for its applicable update, prerequisites, and supported version.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

• Microsoft Security Response Center (opens in a new tab)
• Microsoft security update · 5127648 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126651 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126655 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126646 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127646 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126868 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126835 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126836 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)