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CVE-2026-49796

Windows GDI+ Remote Code Execution Vulnerability

Published: Jul 14, 2026Updated: Jul 16, 2026 Sources: CVE List NVDCWE-122

Description

Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.

In plain language

AI Act now

This is a Windows bug where specially crafted content can make Windows GDI+ crash or run code on your PC when you interact with it; if you’re using the listed Windows versions and handle documents/images from others, you should act to update.

Executive summary

CVE-2026-49796 is a heap-based buffer overflow in Windows GDI+ that can be triggered via user interaction with specially crafted content, leading to local arbitrary code execution on affected Windows 10/11 and Windows Server versions without needing authentication.

If affected, business impact
Local device takeoverMalware execution after browsingBusiness disruption and downtimeCredential theft risk

What to do now

  1. Check whether your organization runs any of these systems: Windows 10, Windows 11, and Windows Server 2012/2012 R2/2016/2019/2022/2025.
  2. For each affected system, determine the exact Windows build/version number.
  3. Update Windows to the fixed version for your platform branch (see the “fixed in” versions below) and reboot if your update process requires it.
  4. If you cannot update immediately, reduce risk by preventing users from opening unknown or unsolicited files/images and blocking external content downloads where possible.
  5. After updating, monitor for abnormal crashes and new suspicious activity on endpoints that handled external content.
Usually a quick update

CVSS Vector Breakdown

AV:LAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

and 22 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

4

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