CVE-2026-62798
Win32k Information Disclosure Vulnerability
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Win32k Information Disclosure Vulnerability
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.
- Record
CVE-2026-62798- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Weakness
- CWE-822
- Updated
- 2026-11-02
EUVDEUVD-2026-56387
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.
- Record
EUVD-2026-56387- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mqr9-rmf4-cr4m
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose...
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.
- Record
GHSA-mqr9-rmf4-cr4m- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-822
- Updated
- 2026-11-02
NVD
Untrusted pointer dereference in Windows Win32K allows an authorized attacker to disclose information locally.
- Record
CVE-2026-62798- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-822
- Updated
- 2026-11-02
Affected products
- microsoft windows 11 version 23h2
- microsoft windows 11 version 24h2
- microsoft windows 11 version 25h2
- microsoft windows 11 version 26h1
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
- microsoft windows 11 23h2
- microsoft windows 11 24h2
- microsoft windows 11 25h2
- microsoft windows 11 26h1
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-62798 is a medium vulnerability (CVSS 5.5) in Microsoft Windows 11 Version 23h2, published August 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. No source names a fixed version.