SB2025101466 - Multiple vulnerabilities in Microsoft Windows Kernel
Published: October 14, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2025-59186)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Windows Kernel. A local user can gain unauthorized access to sensitive information on the system.
2) Use of uninitialized resource (CVE-ID: CVE-2025-59194)
CWE-ID: CWE-908 - Use of Uninitialized Resource
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to usage of uninitialized resources in Windows Kernel. A local user can pass specially crafted data to the application, trigger uninitialized usage of resources and gain elevated privileges on the system.
3) Input validation error (CVE-ID: CVE-2025-59187)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privielegs on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Windows Kernel. A local user can pass specially crafted input to the application and gain elevated privileges on the target system.
4) Information disclosure (CVE-ID: CVE-2025-55699)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Windows Kernel. A local user can gain unauthorized access to sensitive information on the system.
5) Use-after-free (CVE-ID: CVE-2025-55693)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows Kernel. A local user can win a race condition and gain elevated privileges on the system.
6) Information disclosure (CVE-ID: CVE-2025-55683)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Windows Kernel. A local user can gain unauthorized access to sensitive information on the system.
7) Input validation error (CVE-ID: CVE-2025-55679)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain access to sensitive information on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Windows Kernel. A local attacker can pass specially crafted input to the application and disclose certain memory address within kernel space.
8) Cleartext storage of sensitive information (CVE-ID: CVE-2025-55334)
CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain access to potentially sensitive information.
The vulnerability exists due to cleartext storage of sensitive information in Windows Kernel. A local attacker can decrypt the driver's settings.
9) Out-of-bounds read (CVE-ID: CVE-2025-50152)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in Windows Kernel. A local user can trigger an out-of-bounds read error and read contents of memory on the system, leading to privilege escalation.
10) Untrusted Pointer Dereference (CVE-ID: CVE-2025-59207)
CWE-ID: CWE-822 - Untrusted Pointer Dereference
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to untrusted pointer dereference in Windows Kernel. A local user can gain elevated privileges on the target system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-59186
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-59194
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-59187
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55699
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55693
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55683
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55679
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-55334
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-50152
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-59207