CVE-2026-83860

Analyzed Analyzed - Analysis Complete

Windows GDI Stack-Based Buffer Overflow

Publication date: 2026-10-13

Last updated on: 2026-10-21

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

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Meta Information

Published

2026-10-13

Last Modified

2026-10-21

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-83860

EUVD

EUVD-2026-100018

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_server_2016	to 10.0.14393.9612 (exc)
microsoft	windows_server_2019	to 10.0.17763.9376 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow vulnerability in the Windows Graphics Device Interface (GDI). It allows an unauthorized attacker to cause a denial of service over a network by exploiting a flaw in how GDI handles memory operations.

Detection Guidance

This vulnerability is a stack-based buffer overflow in Windows GDI that allows denial of service over a network. Detection typically involves monitoring for crashes or unusual behavior in Windows GDI components. Check Windows Event Logs for application crashes related to GDI or graphics drivers. Use commands like 'sfc /scannow' to verify system file integrity and 'dism /online /cleanup-image /restorehealth' to repair system files. Monitor network traffic for unusual patterns targeting GDI services.

Impact Analysis

An attacker could exploit this to crash affected systems remotely, leading to service disruptions. Systems running vulnerable Windows versions are at risk of becoming unresponsive or rebooting unexpectedly.

Compliance Impact

This vulnerability enables denial of service attacks via a stack-based buffer overflow in Windows GDI. Such attacks could disrupt critical services, potentially violating availability requirements in GDPR, HIPAA, and other standards that mandate system resilience and uptime.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows GDI buffer overflow vulnerability. Monitor Microsoft's security advisories for updates and install them promptly.

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