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CVE-2026-50400Patch(microsoft / windows_10_1607)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1607 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Stack-based buffer overflow in Windows App Installer 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

STABLE

Are you affected?

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

  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-15); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2012windows_server_2016windows_server_2019

2 versions affected across 12 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-15: 1Mentions · 2026-07-23: 1Patch / Workaround · 2026-07-15: 1Technical Details · 2026-07-23: 107-1507-23
Signal classification2 categories
Patch
150.0%
General
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-07-151
Patch1
2026-07-231
General1
Full discourse2 posts
  • ゆぅさん@YY20424277
    General

    【3軸解説】「マイクロソフトのMicrosoft Windows 10 1607等の複数製品におけるスタックベースのバッファオーバーフローの脆弱性（CVE-2026-50400）」を、背景 / 目的 / 効果 の 3 軸で読み解きます。 背景/目的/効果の3軸で読み解きました。 #セキュリティ #若手コ… ▶ 無料ツール WR-Analysis: https://www.intect-i.jp/tools/wr-analysis/?utm_source=sns&utm_medium=social&utm_campaign=wr_analysis

    Post summary

    The post provides an analytical overview of CVE‑2026‑50400, a stack buffer overflow in Windows 10 1607, but offers no evidence of PoCs, exploits, active use, or patch information.

    0000062
    842 followersView on X
  • Windows Forum@windowsforum
    Patch

    🪟 Windows App Installer had a privilege-escalation bug, so July’s updates aren’t “just another reboot.” Patch it before a local user turns a harmless install into admin access. https://windowsforum.com/threads/cve-2026-50400-install-july-updates-to-fix-windows-app-installer-elevation.438398/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #PrivilegeEscalation #CveVulnerabilities #AppInstaller https://t.co/yhfhm741Mc

    Post summary

    The tweet alerts on a Windows App Installer privilege‑escalation bug (CVE‑2026‑50400) and urges users to apply the July patch to prevent local users from gaining admin rights during installations.

    0000021
    1.2K followersView on X
CPE platform detail22 entries

22 of 22 entries

PartVendorProductVersionTarget SWTarget HW
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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