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Talos Intelligence, Zero Day Initiative, and BleepingComputer corroborate the CVE-2026-50380 Windows GDI+ RCE flaw patched in July 2026 Patch Tuesday.

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Home/Tech/Critical RCE Flaw in Windows GDI+ Carries 9.6 CVSS Score
VERIFIEDBy Xavier Rivera· ·1.5 min read

Critical RCE Flaw in Windows GDI+ Carries 9.6 CVSS Score

Microsoft disclosed CVE-2026-50380, a critical heap-based buffer overflow in Windows GDI+ that enables remote code execution over a network with a 9.6 CVSS score. The flaw affects numerous Windows 10 and 11 releases and is being patched as part of the July 2026 Patch Tuesday.

Source:NVD
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Critical RCE Flaw in Windows GDI+ Carries 9.6 CVSS Score
TL;DRAI · 60 sec read

Microsoft disclosed CVE-2026-50380, a critical remote code execution vulnerability in Windows GDI+. The heap-based buffer overflow has a CVSS score of 9.6 and affects several Windows 10 and Windows 11 versions. Patches are available in the July 2026 Patch Tuesday release and no exploitation is known.

Microsoft has disclosed a heap-based buffer overflow vulnerability in Windows GDI+ that allows an unauthorized attacker to execute code over a network.

Microsoft rates the vulnerability as critical. The flaw, tracked as CVE-2026-50380, carries a CVSS base score of 9.6 under version 3.1 with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H. It was received by the NVD from Microsoft on July 14, 2026.
Zero Day Initiative explicitly labels the issue a Windows GDI+ Remote Code Execution Vulnerability and states there is no known exploitation in the wild.

The vulnerability affects multiple versions of Windows 10 and Windows 11. Impacted releases include Windows 10 Version 1607 before build 10.0.14393.9339, Windows 10 Version 1809 before 10.0.17763.9020, Windows 10 Version 21H2 before 10.0.19044.7548, and Windows 10 Version 22H2 before 10.0.19045.7548.
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Windows 11 builds are also exposed. Affected editions encompass Windows 11 Version 24H2 before 10.0.26100.8875, Windows 11 Version 25H2 before 10.0.26200.8875, and Windows 11 version 26H1 before 10.0.28000.2269. The weakness is classified as CWE-122, heap-based buffer overflow.

Talos Intelligence lists CVE-2026-50380 among critical remote code execution vulnerabilities addressed in the July 2026 Patch Tuesday for both Windows GDI+ and GDI. It is grouped with CVE-2026-49796 and CVE-2026-54122. Zero Day Initiative explicitly labels the issue a Windows GDI+ Remote Code Execution Vulnerability and states there is no known exploitation in the wild.
Patches are available through Microsoft’s update channels. Administrators should apply the July 2026 security updates immediately to affected systems running the listed Windows 10 and Windows 11 versions. The NVD record remains marked for further enrichment as additional details become available.

EXPERT TAKE

Enterprise security teams should prioritize this Patch Tuesday release, as the network-attack vector and high impact score make it a prime target for opportunistic threat actors.

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