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CVE-2026-50357Patch(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

Numeric truncation error in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-197

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.

  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

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

What's happening

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

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2016windows_server_2019windows_server_2022

Deep dive

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

    🪟 ReFS just reminded us that “local access” is not harmless. CVE-2026-50357 turns a foothold into serious control—patch July updates before your file system becomes an escalation ladder. https://windowsforum.com/threads/cve-2026-50357-july-updates-fix-windows-refs-privilege-escalation.438430/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #RefsVulnerability #July2026Updates #Cve202650357 https://t.co/kNQzw9V7tC

    Post summary

    The post warns that CVE‑2026‑50357 is a privilege‑escalation flaw in ReFS and urges users to apply July updates to mitigate the risk.

    0000037
    1.2K followersView on X
CPE platform detail20 entries

20 of 20 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_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

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