SB20260714114 - Multiple vulnerabilities in Microsoft Windows Media
Published: July 14, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 13 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2026-34349)
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 Media. A local user can gain unauthorized access to sensitive information on the system.
2) Use-after-free (CVE-ID: CVE-2026-50677)
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 Media. A local user can gain elevated privileges on the target system.
3) Information disclosure (CVE-ID: CVE-2026-50415)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in Windows Media. A remote attacker can gain unauthorized access to sensitive information on the system.
4) Information disclosure (CVE-ID: CVE-2026-50394)
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 Media. A local user can gain unauthorized access to sensitive information on the system.
5) Use-after-free (CVE-ID: CVE-2026-50433)
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 Media. A local user can gain elevated privileges on the target system.
6) Race condition (CVE-ID: CVE-2026-50676)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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 a race condition in Windows Media. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
7) Race condition (CVE-ID: CVE-2026-50379)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows Media. A remote user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
8) Race condition (CVE-ID: CVE-2026-50414)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows Media. A remote user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
9) Race condition (CVE-ID: CVE-2026-50398)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows Media. A remote user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
10) Use-after-free (CVE-ID: CVE-2026-50358)
CWE-ID: CWE-416 - Use After Free
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 compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows Media. A local user can gain elevated privileges on the target system.
11) Heap-based buffer overflow (CVE-ID: CVE-2026-50336)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
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 target system.
The vulnerability exists due to a boundary error in Windows Media. A local user can pass specially crafted data to the application, trigger a heap-based buffer overflow and gain elevated privileges on the system.
12) Race condition (CVE-ID: CVE-2026-50404)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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 escalate privileges on the system.
The vulnerability exists due to a race condition in Windows Media. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
13) Heap-based buffer overflow (CVE-ID: CVE-2026-50327)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in Windows Media. A remote user can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34349
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50677
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50415
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50394
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50433
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50676
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50379
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50414
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50398
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50358
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50336
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50404
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50327