SB2026071549 - Multiple vulnerabilities in Microsoft Windows USB Print Driver
Published: July 15, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2026-55000)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.4 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows USB Print Driver. An attacker with physical access can gain elevated privileges on the system.
2) Use-after-free (CVE-ID: CVE-2026-50674)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 7.3 [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]
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in Windows USB Print Driver. A local user can gain elevated privileges on the system.
3) Race condition (CVE-ID: CVE-2026-49806)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 7.3 [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]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows USB Print Driver. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
4) Race condition (CVE-ID: CVE-2026-49802)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 7.3 [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]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows USB Print Driver. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
5) Race condition (CVE-ID: CVE-2026-54996)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 7.3 [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]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows USB Print Driver. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
6) Race condition (CVE-ID: CVE-2026-54991)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 8.5 [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]
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Windows USB Print Driver. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55000
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50674
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49806
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49802
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54996
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54991