CVE-2026-50387

Windows GDI Elevation of Privilege Vulnerability

HIGH 7.8

En bref

Source: NVD
EPSS: EPSS 0.33 % · centile 27 (2026-10-28)
État: PUBLISHED
Publiée: 2026-07-14 17:07 UTC
Mise à jour: 2026-10-28 20:03 UTC
Attribuée par: microsoft
Statut NVD: Analyzed

Description

Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally.

Faiblesses (CWE)

CWE-121 — Débordement de tampon sur la pile

Références

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50387

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

Références européennes

ENISA EUVD · EUVD-2026-43932
GCVE · GCVE-0-2026-50387

Avis du CERT-FR

CERTFR-2026-AVI-0869 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr
CERTFR-2026-AVI-0868 — Multiples vulnérabilités dans Microsoft Office · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*
cpe:2.3:a:microsoft:microsoft_365:-:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_2021:-:*:*:*:ltsc:macos:-:*
cpe:2.3:a:microsoft:office_2024:-:*:*:*:ltsc:macos:-:*
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.9339
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.9339
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.9020
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.9020
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* < 10.0.19044.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* < 10.0.19045.7548
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* < 10.0.26100.8875
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* < 10.0.26100.8875
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* < 10.0.26200.8875
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* < 10.0.26200.8875
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* < 10.0.28000.2269
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* < 10.0.28000.2525
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.9339
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.9020
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.5386
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.33158

Produits affectés

Produit	Versions
Microsoft · Microsoft Office 365 for Mac	affected 1.0.0 < 16.111.26071215
Microsoft · Microsoft Office for Android	affected 16.0.1 < 16.0.20228.20042
Microsoft · Microsoft Office LTSC for Mac 2021	affected 16.0.1 < 16.111.26071215
Microsoft · Microsoft Office LTSC for Mac 2024	affected 16.0.0 < 16.111.26071215
Microsoft · Windows 10 Version 1607	affected 10.0.14393.0 < 10.0.14393.9339
Microsoft · Windows 10 Version 1809	affected 10.0.17763.0 < 10.0.17763.9020
Microsoft · Windows 10 Version 21H2	affected 10.0.19044.0 < 10.0.19044.7548
Microsoft · Windows 10 Version 22H2	affected 10.0.19045.0 < 10.0.19045.7548
Microsoft · Windows 11 Version 24H2	affected 10.0.26100.0 < 10.0.26100.8875
Microsoft · Windows 11 Version 25H2	affected 10.0.26200.0 < 10.0.26200.8875
Microsoft · Windows 11 version 26H1	affected 10.0.28000.0 < 10.0.28000.2525
Microsoft · Windows Server 2012	affected 6.2.9200.0 < 6.2.9200.26226
Microsoft · Windows Server 2012 (Server Core installation)	affected 6.2.9200.0 < 6.2.9200.26226
Microsoft · Windows Server 2012 R2	affected 6.3.9600.0 < 6.3.9600.23291
Microsoft · Windows Server 2012 R2 (Server Core installation)	affected 6.3.9600.0 < 6.3.9600.23291
Microsoft · Windows Server 2016	affected 10.0.14393.0 < 10.0.14393.9339
Microsoft · Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 < 10.0.14393.9339
Microsoft · Windows Server 2019	affected 10.0.17763.0 < 10.0.17763.9020
Microsoft · Windows Server 2019 (Server Core installation)	affected 10.0.17763.0 < 10.0.17763.9020
Microsoft · Windows Server 2022	affected 10.0.20348.0 < 10.0.20348.5386

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD