CVE-2025-62458

HIGH

Published Dec 9, 2025 Modified Dec 12, 2025 CWE-122

Description

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
microsoft	windows_10_1607	< 10.0.14393.8688
microsoft	windows_10_1607	< 10.0.14393.8688
microsoft	windows_10_1809	< 10.0.17763.8146
microsoft	windows_10_1809	< 10.0.17763.8146
microsoft	windows_10_21h2	< 10.0.19044.6691
microsoft	windows_10_22h2	< 10.0.19045.6691
microsoft	windows_11_23h2	< 10.0.22631.6345
microsoft	windows_server_2008	All
microsoft	windows_server_2012	All
microsoft	windows_server_2012	All
microsoft	windows_server_2016	< 10.0.14393.8688
microsoft	windows_server_2019	< 10.0.17763.8146
microsoft	windows_server_2022	< 10.0.20348.4467

References

Advisories & Patches

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62458

Frequently Asked Questions

What is CVE-2025-62458? +

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2025-62458? +

CVE-2025-62458 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-62458? +

CVE-2025-62458 affects products from microsoft, specifically: windows_10_1607, windows_10_1809, windows_10_21h2, windows_10_22h2, windows_11_23h2, windows_server_2008, windows_server_2012, windows_server_2016, windows_server_2019, windows_server_2022. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-62458? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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