What is the CVSS score of CVE-2025-49727?

CVE-2025-49727 has a CVSS 3.1 base score of 7.0 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of Windows are affected by CVE-2025-49727?

CVE-2025-49727 is a high-severity privilege escalation vulnerability in Windows Win32K Graphics that allows authenticated local users to gain elevated system privileges through a heap buffer…. A patch is available.

How to fix or mitigate CVE-2025-49727?

Within 24 hours: Verify which Windows versions are deployed in your environment and check Microsoft's advisory for affected OS versions. Within 7 days: Apply the vendor-released patch to all Windows systems, prioritizing servers and workstations with local user access. Within 30 days: Complete patch deployment across the entire Windows estate and verify compliance through automated vulnerability scanning.

Windows CVE-2025-49727

EUVD-2025-20546 HIGH

Heap-based Buffer Overflow (CWE-122)

2025-07-08 secure@microsoft.com

Windows Buffer Overflow Heap Overflow Microsoft Windows 10 1507 Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025

7.0

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:29 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

10.0.19045.6093,6.1.7601.27820,10.0.17763.7558

EUVD ID Assigned

Mar 16, 2026 - 04:21 euvd

EUVD-2025-20546

Analysis Generated

Mar 16, 2026 - 04:21 vuln.today

CVE Published

Jul 08, 2025 - 17:16 nvd

HIGH 7.0

DescriptionNVD

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

Analysis

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

Technical ContextAI

A buffer overflow occurs when data written to a buffer exceeds its allocated size, potentially overwriting adjacent memory and corrupting program state. This vulnerability is classified as Heap-based Buffer Overflow (CWE-122).

RemediationAI

Use memory-safe languages or bounds-checked functions. Enable ASLR, DEP/NX, and stack canaries. Apply vendor patches promptly.

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CVE-2025-49727 vulnerability details – vuln.today

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Windows CVE-2025-49727

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code