SB2026101434 - Multiple vulnerabilities in Microsoft Windows
Published: October 14, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 16 vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2026-97829)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit the out-of-bounds read over the network to disclose heap memory from a privileged process running on the server.
2) Double free (CVE-ID: CVE-2026-97830)
CWE-ID: CWE-415 - Double Free
CVSSv4: 8.7 [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]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to double free in Windows Internet Information Services when handling network traffic. A remote attacker can exploit the double free over a network to cause a denial of service.
3) Out-of-bounds read (CVE-ID: CVE-2026-97831)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to read heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessing the server over a network. A remote user can trigger the out-of-bounds read to read heap memory from a privileged process running on the server.
4) Out-of-bounds read (CVE-ID: CVE-2026-97832)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit the out-of-bounds read to disclose sensitive information from the heap memory of a privileged process running on the server.
5) Out-of-bounds read (CVE-ID: CVE-2026-97833)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can read heap memory from a privileged process running on the server to disclose sensitive information.
6) Out-of-bounds read (CVE-ID: CVE-2026-97834)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit the out-of-bounds read to disclose heap memory from a privileged process running on the server.
7) Out-of-bounds read (CVE-ID: CVE-2026-97835)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can read heap memory from a privileged process running on the server to disclose sensitive information.
8) Out-of-bounds read (CVE-ID: CVE-2026-97836)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessing the server over a network. A remote user can exploit the out-of-bounds read to disclose sensitive information from the heap memory of a privileged process running on the server.
9) Out-of-bounds read (CVE-ID: CVE-2026-97837)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can read heap memory from a privileged process running on the server to disclose sensitive information.
10) Out-of-bounds read (CVE-ID: CVE-2026-97838)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit this issue over a network to disclose heap memory from a privileged process running on the server.
11) Out-of-bounds read (CVE-ID: CVE-2026-97839)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when handling network interactions. A remote user can read heap memory from a privileged process running on the server to disclose sensitive information.
12) Out-of-bounds read (CVE-ID: CVE-2026-97840)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can read heap memory from a privileged process running on the server to disclose sensitive information.
13) Out-of-bounds read (CVE-ID: CVE-2026-97841)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit the flaw over a network to disclose heap memory from a privileged process running on the server.
14) Out-of-bounds read (CVE-ID: CVE-2026-97842)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when handling network interactions. A remote user can exploit the out-of-bounds read over a network to disclose heap memory from a privileged process running on the server.
15) Out-of-bounds read (CVE-ID: CVE-2026-97843)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when accessed over a network. A remote user can exploit this out-of-bounds read to disclose heap memory from a privileged process running on the server.
16) Out-of-bounds read (CVE-ID: CVE-2026-97844)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose heap memory from a privileged process running on the server.
The vulnerability exists due to an out-of-bounds read in DNS Server when handling network interactions. A remote user can exploit the out-of-bounds read over a network to disclose heap memory from a privileged process running on the server.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97829
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97830
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97831
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97832
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97833
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97834
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97835
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97836
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97837
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97838
- https://support.microsoft.com/help/5126835
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97839
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97840
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97841
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97842
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97843
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-97844