CVE-2026-83755
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk34th percentile - higher than 34% of all known CVEs
Summary
Use of an uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally.
Risk Assessment
An attacker with local access could obtain sensitive information, potentially facilitating further attacks on the organization.
Recommendation
Apply security updates for Windows and restrict local access to trusted users.
Other vulnerabilities in Windows Win32K
See all- CVE-2026-34347High
A use after free vulnerability in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2026-33839High
A race condition in Windows Win32K allows an authorized attacker to locally elevate privileges due to improper synchronization during concurrent execution using shared resources.
- CVE-2026-24285High
A use after free vulnerability in Windows Win32K allows an authorized attacker to elevate privileges locally.
- CVE-2025-30388High
CVE-2025-30388 involves a heap-based buffer overflow in the Win32K driver in Windows, allowing an unauthorized attacker to execute code locally.
- CVE-2022-41109High
Vulnerability in Windows Win32k allows elevation of privilege. It could be exploited to gain higher privileges on the system.
- CVE-2022-21882HighActively exploited
Win32k Elevation of Privilege Vulnerability.
- CVE-2021-26863High
Elevation of Privilege vulnerability in Windows Win32k. Details are not provided in the description.
- CVE-2021-1732HighActively exploited
A vulnerability in the Win32k component of Windows allows elevation of privilege. An attacker could exploit it to gain higher privileges on the system.
- CVE-2019-1458HighActively exploited
A vulnerability in Windows when the Win32k component fails to properly handle objects in memory allows elevation of privilege.
- CVE-2019-1132HighActively exploited
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'.
Original NVD description (English source)
Use of uninitialized resource in Windows Win32K allows an authorized attacker to disclose information locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS