SB2026071627 - Multiple vulnerabilities in Microsoft Windows Active Directory Federation Services

Main Vulnerability Database SB2026071627

SB2026071627 - Multiple vulnerabilities in Microsoft Windows Active Directory Federation Services

Published: July 16, 2026

Security Bulletin ID SB2026071627

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 7

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 7 vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2026-54983)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

2) Stack-based buffer overflow (CVE-ID: CVE-2026-50411)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

3) Stack-based buffer overflow (CVE-ID: CVE-2026-50355)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

4) Infinite loop (CVE-ID: CVE-2026-50324)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in Windows Active Directory Federation Services. A remote attacker can consume all available system resources and cause denial of service conditions.

5) Stack-based buffer overflow (CVE-ID: CVE-2026-50368)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

6) Stack-based buffer overflow (CVE-ID: CVE-2026-50304)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

7) Stack-based buffer overflow (CVE-ID: CVE-2026-50695)

CWE-ID: CWE-121 - Stack-based buffer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in Windows Active Directory Federation Services. A remote unauthenticated attacker can trigger stack-based buffer overflow and cause a denial of service condition on the target system.

Remediation

Install update from vendor's website.

References