VulnSocial

CVE-2026-50387Patch(microsoft / 365_copilot)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft 365_copilot systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-121

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • 365_copilot
  • microsoft_365
  • office_2021
  • office_2024

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
365_copilotmicrosoft_365office_2021office_2024windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2

2 versions affected across 16 products

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-15: 1Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-15: 107-15
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • Windows Forum@windowsforum
    Patch

    🪟 July’s Windows update patches a GDI flaw that could turn a local login into admin access. Not glamorous, but “install updates before attackers do” remains Microsoft’s most reliable feature. https://windowsforum.com/threads/cve-2026-50387-install-july-updates-to-fix-windows-gdi-elevation.438477/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #PrivilegeEscalation #MicrosoftPatchTuesday https://t.co/jAMIw7CHzc

    Post summary

    The July Windows update addresses CVE-2026-50387, a GDI-related local privilege escalation flaw, and encourages users to apply the patch promptly.

    0000021
    1.2K followersView on X
CPE platform detail26 entries

26 of 26 entries

PartVendorProductVersionTarget SWTarget HW
Appmicrosoft365_copilot-android-
Appmicrosoftmicrosoft_365-macos-
Appmicrosoftoffice_2021-macos-
Appmicrosoftoffice_2024-macos-
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

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