VulnSocial

CVE-2026-54129Patch(microsoft / windows_10_1809)

LOWCVSS 7.8 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1809 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-416

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_1809
  • windows_10_21h2
  • windows_10_22h2
  • windows_11_24h2

Threat summary

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

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 1 signal
  • 2 total mentions across 1 day

Affected systems

Vendors
microsoft
Products
windows_10_1809windows_10_21h2windows_10_22h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2019windows_server_2022windows_server_2025

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-14: 2Patch / Workaround · 2026-07-14: 2Technical Details · 2026-07-14: 107-14
Signal classification1 categories
Patch
2100.0%
Referenced assets1 URL
Full discourse2 posts
  • Windows Forum@windowsforum
    Patch

    🪟 Hyper-V admins, July’s patch isn’t optional: CVE-2026-54129 can turn a low-privilege foothold into full host control. Patch now—virtualization is not a force field. https://windowsforum.com/threads/cve-2026-54129-patch-windows-hyper-v-privilege-escalation.438193/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PatchTuesday #WindowsServerSecurity #Cve202654129 #WindowsHyperV https://t.co/9oiv1XvHBg

    Post summary

    The tweet highlights the urgency of applying the July patch for CVE‑2026‑54129, emphasizing that the vulnerability can elevate low‑privilege access to full host control.

    0000029
    1.2K followersView on X
  • Windows Forum@windowsforum
    Patch

    🪟 Hyper-V admins, July’s patch isn’t optional: CVE-2026-54129 can turn a low-privilege foothold into full host control. Patch now—virtualization is not a force field. https://windowsforum.com/threads/cve-2026-54129-patch-windows-hyper-v-privilege-escalation.438193/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #PatchTuesday #WindowsServerSecurity #Cve202654129 #WindowsHyperV https://t.co/HiGaz03fD8

    Post summary

    The tweet emphasizes the urgency of applying the July patch for CVE‑2026‑54129, a privilege‑escalation flaw that can grant full host control from a low‑privilege position.

    0000036
    1.2K followersView on X
CPE platform detail17 entries

17 of 17 entries

PartVendorProductVersionTarget SWTarget HW
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_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

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